$ATNI
ATN International, Inc. Stock $atni

$atni Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000155837021002145 Filed on March 01, 2021

Income Statement

Concept	2020 Q4	2020	2019 Q4
Revenue	$123.7M	$455.4M	$112.1M
YoY Change	10.36%	3.81%	3.97%
Cost Of Revenue	$28.20M	$111.8M	$29.50M
YoY Change	-4.41%	-0.97%	-2.96%
Gross Profit	$95.50M	$343.7M	$82.60M
YoY Change	15.62%	5.49%	6.72%
Gross Profit Margin	77.2%	75.46%	73.69%
Selling, General & Admin	$35.40M	$139.0M	$34.70M
YoY Change	2.02%	-0.18%	-3.61%
% of Gross Profit	37.07%	40.45%	42.01%
Research & Development	$19.40M	$73.40M	$19.40M
YoY Change	0.0%	-5.41%	6.01%
% of Gross Profit	20.31%	21.36%	23.49%
Depreciation & Amortization	$22.20M	$88.31M	$24.20M
YoY Change	-8.26%	-0.91%	14.69%
% of Gross Profit	23.25%	25.69%	29.3%
Operating Expenses	$138.4M	$446.3M	$113.8M
YoY Change	21.59%	4.92%	16.76%
Operating Profit	-$14.70M	$9.180M	-$1.739M
YoY Change	745.31%	-31.37%	-116.85%
Interest Expense	-$1.300M	$5.347M	-$800.0K
YoY Change	62.5%	6.73%	0.0%
% of Operating Profit		58.25%
Other Income/Expense, Net	-$1.081M	-$9.087M	-$2.568M
YoY Change	-57.9%	24.39%	-352.26%
Pretax Income	-$15.78M	$93.00K	-$4.307M
YoY Change	266.4%	-98.47%	-137.99%
Income Tax	$1.858M	$801.0K	$1.332M
% Of Pretax Income		861.29%
Net Earnings	-$17.64M	-$708.0K	-$5.639M
YoY Change	212.8%	-135.99%	-202.81%
Net Earnings / Revenue	-14.26%	-0.16%	-5.03%
Basic Earnings Per Share	-$1.30	-$0.89	-$0.62
Diluted Earnings Per Share	-$1.30	-$0.89	-$0.62
COMMON SHARES
Basic Shares Outstanding	15.90M	15.92M	16.00M
Diluted Shares Outstanding		15.92M

Balance Sheet

Concept	2020 Q4	2020	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$103.9M	$103.9M	$161.7M
YoY Change	-35.75%	-35.75%	-15.87%
Cash & Equivalents	$103.9M	$103.9M	$161.3M
Short-Term Investments			$400.0K
Other Short-Term Assets	$82.80M	$82.80M	$23.50M
YoY Change	252.34%	252.34%	-39.74%
Inventory	$5.500M	$5.500M	$5.300M
Prepaid Expenses
Receivables	$44.15M	$47.90M	$35.90M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$240.1M	$240.1M	$228.7M
YoY Change	4.96%	4.98%	-17.06%
LONG-TERM ASSETS
Property, Plant & Equipment	$536.5M	$599.7M	$605.6M
YoY Change	-11.41%	-11.06%	-3.39%
Goodwill	$60.69M		$60.69M
YoY Change	0.0%		-5.13%
Intangibles
YoY Change
Long-Term Investments	$17.90M	$17.90M
YoY Change
Other Assets	$52.57M	$34.80M	$65.84M
YoY Change	-20.16%	-46.38%	74.61%
Total Long-Term Assets	$843.6M	$843.6M	$902.0M
YoY Change	-6.47%	-6.47%	8.47%
TOTAL ASSETS
Total Short-Term Assets	$240.1M	$240.1M	$228.7M
Total Long-Term Assets	$843.6M	$843.6M	$902.0M
Total Assets	$1.084B	$1.084B	$1.131B
YoY Change	-4.16%	-4.16%	2.12%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$96.20M	$96.20M	$74.10M
YoY Change	29.82%	29.82%	-8.41%
Accrued Expenses	$12.40M	$12.40M	$19.90M
YoY Change	-37.69%	-37.69%	-37.42%
Deferred Revenue	$18.54M		$15.04M
YoY Change	23.27%		9.12%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$3.750M	$3.800M	$3.750M
YoY Change	0.0%	0.0%	-20.01%
Total Short-Term Liabilities	$147.9M	$147.9M	$119.7M
YoY Change	23.61%	23.56%	-14.92%
LONG-TERM LIABILITIES
Long-Term Debt	$69.07M	$69.10M	$82.68M
YoY Change	-16.45%	-16.44%	-4.19%
Other Long-Term Liabilities	$50.62M	$101.7M	$57.45M
YoY Change	-11.9%	-10.48%	22.87%
Total Long-Term Liabilities	$119.7M	$170.8M	$140.1M
YoY Change	-14.59%	-12.99%	5.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$147.9M	$147.9M	$119.7M
Total Long-Term Liabilities	$119.7M	$170.8M	$140.1M
Total Liabilities	$329.4M	$438.1M	$324.6M
YoY Change	1.46%	-3.63%	14.32%
SHAREHOLDERS EQUITY
Retained Earnings	$516.9M		$541.9M
YoY Change	-4.61%		-3.85%
Common Stock	$187.8M		$188.5M
YoY Change	-0.38%		3.68%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$645.6M	$645.6M	$676.1M
YoY Change
Total Liabilities & Shareholders Equity	$1.084B	$1.084B	$1.131B
YoY Change	-4.16%	-4.16%	2.12%

Cashflow Statement

Concept	2020 Q4	2020	2019 Q4
OPERATING ACTIVITIES
Net Income	-$17.64M	-$708.0K	-$5.639M
YoY Change	212.8%	-135.99%	-202.81%
Depreciation, Depletion And Amortization	$22.20M	$88.31M	$24.20M
YoY Change	-8.26%	-0.91%	14.69%
Cash From Operating Activities	$14.70M	$86.28M	$31.10M
YoY Change	-52.73%	-1.84%	73.74%
INVESTING ACTIVITIES
Capital Expenditures	-$24.60M	$75.32M	-$23.20M
YoY Change	6.03%	3.57%	-26.58%
Acquisitions
YoY Change
Other Investing Activities	$16.40M	$25.50M	-$2.300M
YoY Change	-813.04%	-264.52%	-104.6%
Cash From Investing Activities	-$8.200M	-$70.20M	-$25.60M
YoY Change	-67.97%	-20.47%	-239.13%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$6.589M
YoY Change		3967.28%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-37.70M	-73.37M	-9.200M
YoY Change	309.78%	145.31%	-46.82%
NET CHANGE
Cash From Operating Activities	14.70M	86.28M	31.10M
Cash From Investing Activities	-8.200M	-70.20M	-25.60M
Cash From Financing Activities	-37.70M	-73.37M	-9.200M
Net Change In Cash	-31.20M	-57.36M	-3.700M
YoY Change	743.24%	87.77%	-119.47%
FREE CASH FLOW
Cash From Operating Activities	$14.70M	$86.28M	$31.10M
Capital Expenditures	-$24.60M	$75.32M	-$23.20M
Free Cash Flow	$39.30M	$10.96M	$54.30M
YoY Change	-27.62%	-27.78%	9.7%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	16900000
CY2019	atni	Amortization Of Contract Assets Into Revenue AmortizationOfContractAssetsIntoRevenue	2300000
CY2019	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	0
CY2020	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	0
CY2020	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	2100000
CY2019	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1800000
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-12593
CY2020	dei	Entity Registrant Name EntityRegistrantName	ATN INTERNATIONAL, INC.
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	01915
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OperatingLeaseLiabilityCurrent us-gaap:OperatingLeaseLiabilityNoncurrent
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000879585
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Trading Symbol TradingSymbol	ATNI
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	us-gaap:PropertyPlantAndEquipmentNet
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	us-gaap:PropertyPlantAndEquipmentNet
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P24M
CY2019Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OperatingLeaseLiabilityCurrent us-gaap:OperatingLeaseLiabilityNoncurrent
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	47-0728886
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	500 Cummings Center
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Beverly
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2020	dei	City Area Code CityAreaCode	978
CY2020	dei	Local Phone Number LocalPhoneNumber	619-1300
CY2020	dei	Security12b Title Security12bTitle	Common Stock, par value $.01 per share
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	672000000
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	15898477
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	103925000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	161287000
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	1072000
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	1071000
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	416000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12100000
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12700000
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	45379000
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	35904000
CY2020Q4	us-gaap	Inventory Gross InventoryGross	5504000
CY2019Q4	us-gaap	Inventory Gross InventoryGross	5253000
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	49450000
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	24792000
CY2020Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	34735000
CY2020Q4	us-gaap	Assets Current AssetsCurrent	240065000
CY2019Q4	us-gaap	Assets Current AssetsCurrent	228723000
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1252780000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1237555000
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	716318000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	631974000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	536462000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	605581000
CY2020Q4	us-gaap	Indefinite Lived License Agreements IndefiniteLivedLicenseAgreements	114083000
CY2019Q4	us-gaap	Indefinite Lived License Agreements IndefiniteLivedLicenseAgreements	93686000
CY2020Q4	us-gaap	Goodwill Goodwill	60691000
CY2019Q4	us-gaap	Goodwill Goodwill	60691000
CY2020Q4	atni	Finite Lived Customer Relationships Net FiniteLivedCustomerRelationshipsNet	5913000
CY2019Q4	atni	Finite Lived Customer Relationships Net FiniteLivedCustomerRelationshipsNet	7441000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	63235000
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	68763000
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	63262000
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	65841000
CY2020Q4	us-gaap	Assets Assets	1083711000
CY2019Q4	us-gaap	Assets Assets	1130726000
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	3750000
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	3750000
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	96205000
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	74093000
CY2020Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	2703000
CY2019Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	2721000
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	7501000
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	8517000
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	12371000
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	11406000
CY2020Q4	atni	Advance Payments And Deposits Current AdvancePaymentsAndDepositsCurrent	24681000
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CY2020Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	717000
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	147928000
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	119669000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	10675000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	8680000
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	51082000
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	56164000
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	50617000
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	57454000
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	69073000
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CY2020Q4	us-gaap	Liabilities Liabilities	329375000
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CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000
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CY2020Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	172000
CY2019Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	172000
CY2020Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1485421
CY2019Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1322921
CY2020Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	59456000
CY2019Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	51129000
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	187754000
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	188471000
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	516901000
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CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	645649000
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	676122000
CY2020Q4	us-gaap	Minority Interest MinorityInterest	108687000
CY2019Q4	us-gaap	Minority Interest MinorityInterest	129961000
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	754336000
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CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	455444000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	438722000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	451207000
CY2020	atni	Termination And Access Fees TerminationAndAccessFees	111763000
CY2019	atni	Termination And Access Fees TerminationAndAccessFees	112943000
CY2018	atni	Termination And Access Fees TerminationAndAccessFees	114478000
CY2020	atni	Construction Costs ConstructionCosts	10616000
CY2020	atni	Engineering And Operation Expense EngineeringAndOperationExpense	73350000
CY2019	atni	Engineering And Operation Expense EngineeringAndOperationExpense	77649000
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CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1641000
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	244000
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2642000
CY2018	us-gaap	Restructuring Charges RestructuringCharges	515000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	88311000
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CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	3279000
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-21572000
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-2841000
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	26425000
CY2018	atni	Loss On Damaged Assets And Other Hurricane Related Charges LossOnDamagedAssetsAndOtherHurricaneRelatedCharges	750000
CY2020	us-gaap	Operating Expenses OperatingExpenses	446264000
CY2019	us-gaap	Operating Expenses OperatingExpenses	425345000
CY2018	us-gaap	Operating Expenses OperatingExpenses	390184000
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	9180000
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	13377000
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	61023000
CY2020	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	421000
CY2019	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	2263000
CY2018	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	1811000
CY2020	us-gaap	Interest Expense InterestExpense	5347000
CY2019	us-gaap	Interest Expense InterestExpense	5010000
CY2018	us-gaap	Interest Expense InterestExpense	7973000
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-4161000
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-4558000
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1119000
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-9087000
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7305000
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7281000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	93000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6072000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	53742000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	801000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4105000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18870000
CY2020	us-gaap	Profit Loss ProfitLoss	-708000
CY2019	us-gaap	Profit Loss ProfitLoss	1967000
CY2018	us-gaap	Profit Loss ProfitLoss	34872000
CY2020	atni	Noncontrolling Interest Income Tax Expense Benefit NoncontrollingInterestIncomeTaxExpenseBenefit	1100000
CY2019	atni	Noncontrolling Interest Income Tax Expense Benefit NoncontrollingInterestIncomeTaxExpenseBenefit	1300000
CY2018	atni	Noncontrolling Interest Income Tax Expense Benefit NoncontrollingInterestIncomeTaxExpenseBenefit	1500000
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	13414000
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12773000
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	15057000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-14122000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-10806000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	19815000
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.89
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.68
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.24
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.89
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.68
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.24
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15923000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15983000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15988000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	15923000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	15983000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16042000
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2020	us-gaap	Profit Loss ProfitLoss	-708000
CY2019	us-gaap	Profit Loss ProfitLoss	1967000
CY2018	us-gaap	Profit Loss ProfitLoss	34872000
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	37000
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-1041000
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-4390000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-101000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-187000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	78000
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-6036000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	100000
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	100000
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	600000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	2412000
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	445000
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	840000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3560000
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	8327000
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5912000
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	10867000
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	12378000
CY2020	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	28939000
CY2020	us-gaap	Profit Loss ProfitLoss	-708000
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	45807
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	2582000
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6384000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1673000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5152000
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2852000
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	294000
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	29720000
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	13414000
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	12773000
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	15057000
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-10562000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-12479000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	14663000
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	806083000
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	161500
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3560000
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2852000
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	754336000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	823324000
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	17000
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	771000
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	10897000
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	7195000
CY2019	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	4504000
CY2019	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	488000
CY2019	us-gaap	Profit Loss ProfitLoss	1967000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1673000
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	294000
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	806083000
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	830223000
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2000
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	158021
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	6319000
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	171907
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12437000
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6420000
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	10863000
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	19033000
CY2018	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	9663000
CY2018	us-gaap	Profit Loss ProfitLoss	34872000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5152000
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	29720000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	823324000
CY2020	us-gaap	Profit Loss ProfitLoss	-708000
CY2019	us-gaap	Profit Loss ProfitLoss	1967000
CY2018	us-gaap	Profit Loss ProfitLoss	34872000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	88311000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	89125000
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	85719000
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5010000
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5816000
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5134000
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	530000
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	542000
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	763000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	5912000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	6384000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	6420000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7317000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2192000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-23242000
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3427000
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-4724000
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-21572000
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-2841000
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	26425000
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	3279000
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-357000
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-362000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1342000
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-42000
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	308000
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	17774000
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	3511000
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1682000
CY2020	atni	Increase Decrease In Inventory Prepayments And Other Current Assets IncreaseDecreaseInInventoryPrepaymentsAndOtherCurrentAssets	18624000
CY2019	atni	Increase Decrease In Inventory Prepayments And Other Current Assets IncreaseDecreaseInInventoryPrepaymentsAndOtherCurrentAssets	1613000
CY2018	atni	Increase Decrease In Inventory Prepayments And Other Current Assets IncreaseDecreaseInInventoryPrepaymentsAndOtherCurrentAssets	-5924000
CY2020	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	-2218000
CY2019	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	-4581000
CY2018	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	-3147000
CY2020	atni	Increase Decrease In Accounts Payable And Accrued Liabilities Advance Payments And Deposits And Other Current Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilitiesAdvancePaymentsAndDepositsAndOtherCurrentLiabilities	12597000
CY2019	atni	Increase Decrease In Accounts Payable And Accrued Liabilities Advance Payments And Deposits And Other Current Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilitiesAdvancePaymentsAndDepositsAndOtherCurrentLiabilities	-2536000
CY2018	atni	Increase Decrease In Accounts Payable And Accrued Liabilities Advance Payments And Deposits And Other Current Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilitiesAdvancePaymentsAndDepositsAndOtherCurrentLiabilities	-7044000
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	799000
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-19053000
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	29089000
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	8790000
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5711000
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	238000
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-1236000
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2940000
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1778000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	86284000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	87903000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	115865000
CY2020	atni	Payments To Acquire Property Plant And Equipment Excluding Hurricane Rebuild PaymentsToAcquirePropertyPlantAndEquipmentExcludingHurricaneRebuild	75323000
CY2019	atni	Payments To Acquire Property Plant And Equipment Excluding Hurricane Rebuild PaymentsToAcquirePropertyPlantAndEquipmentExcludingHurricaneRebuild	72602000
CY2018	atni	Payments To Acquire Property Plant And Equipment Excluding Hurricane Rebuild PaymentsToAcquirePropertyPlantAndEquipmentExcludingHurricaneRebuild	105769000
CY2019	atni	Payments For Hurricane Rebuild Capital Expenditures PaymentsForHurricaneRebuildCapitalExpenditures	123000
CY2018	atni	Payments For Hurricane Rebuild Capital Expenditures PaymentsForHurricaneRebuildCapitalExpenditures	80152000
CY2018	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	34606000
CY2020	atni	Proceeds From Government Grants ProceedsFromGovernmentGrants	16316000
CY2019	atni	Proceeds From Government Grants ProceedsFromGovernmentGrants	3140000
CY2018	atni	Proceeds From Government Grants ProceedsFromGovernmentGrants	5400000
CY2020	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0.0
CY2019	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0.0
CY2018	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	11500000
CY2019	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	6572000
CY2018	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	48270000
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	20396000
CY2020	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	2768000
CY2019	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	25362000
CY2018	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	3000000
CY2020	us-gaap	Proceeds From Divestiture Of Interest In Subsidiaries And Affiliates ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates	11969000
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	116000
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	8028000
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	138000
CY2018	atni	Proceeds From Disposition Of Long Lived Assets ProceedsFromDispositionOfLongLivedAssets	6900000
CY2020	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	120000
CY2019	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	8141000
CY2018	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	6564000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-70198000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-88262000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-87319000
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	10891000
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	10880000
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	10866000
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	10368000
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	7161000
CY2018	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	18780000
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1096000
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1340000
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	13751000
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	4700000
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	9795000
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	72000
CY2020	atni	Payments For Repurchase Of Common Stock Shares Based Compensation PaymentsForRepurchaseOfCommonStockSharesBasedCompensation	1733000
CY2019	atni	Payments For Repurchase Of Common Stock Shares Based Compensation PaymentsForRepurchaseOfCommonStockSharesBasedCompensation	1649000
CY2018	atni	Payments For Repurchase Of Common Stock Shares Based Compensation PaymentsForRepurchaseOfCommonStockSharesBasedCompensation	4622000
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	6589000
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	162000
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1576000
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	28939000
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	4504000
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	9663000
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	488000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-73367000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-29908000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-55230000
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-80000
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-282000
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-299000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-57361000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-30549000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-26983000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	162358000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	192907000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	219890000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	104997000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	162358000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	192907000
CY2020	us-gaap	Interest Paid Net InterestPaidNet	4829000
CY2019	us-gaap	Interest Paid Net InterestPaidNet	4554000
CY2018	us-gaap	Interest Paid Net InterestPaidNet	7235000
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6117000
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	30411000
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	12486000
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	2703000
CY2019Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	2721000
CY2018Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	2720000
CY2020	atni	Transfer From Inventory Materials And Supplies To Property Plant And Equipment TransferFromInventoryMaterialsAndSuppliesToPropertyPlantAndEquipment	-1219000
CY2018	atni	Transfer From Inventory Materials And Supplies To Property Plant And Equipment TransferFromInventoryMaterialsAndSuppliesToPropertyPlantAndEquipment	6708000
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	21746000
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	11668000
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	12877000
CY2020	us-gaap	Nature Of Operations NatureOfOperations	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 10pt 0pt;"><b style="font-weight:bold;">1. ORGANIZATION AND BUSINESS OPERATIONS</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:32.4pt;margin:0pt;">The Company strives to be a leading platform for the operation of, and investment in, smaller and specialty market communications services and technology companies. <span style="white-space:pre-wrap;"> The Company has a long track record of delivering critical infrastructure-based solutions to underserved markets. </span>The Company’s majority-owned operating subsidiaries provide facilities-based communications services, along with related information technology solutions in the United States, Bermuda, and the Caribbean. The Company also has non-controlling investments in several communications and technology companies, and it continues to consider opportunities to make controlling and minority investments in businesses that it believes have the potential for generating substantial and relatively steady cash flows over extended periods of time or have technologies or business models that might prove valuable to the Company’s main operating subsidiaries or create significant longer term growth potential for the Company as a whole.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:32.4pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:32.4pt;margin:0pt;"><span style="white-space:pre-wrap;">At the holding company level, the Company oversees the allocation of capital within and among its subsidiaries, affiliates, minority investments, and stockholders. The Company also has developed significant operational expertise and resources that it uses to augment the capabilities of its individual operating subsidiaries. Over the past ten years, the Company has built a platform of resources and expertise to support its operating subsidiaries and to improve their quality of service, and customer acquisition, retention, and satisfaction while maintaining optimal operating efficiencies. The Company has a number of shared service functions, including billing, network and engineering and customer service, and the parent company also employs personnel with specialized skills that provide greater economies of scale and expertise than would typically be available at the operating subsidiary level. </span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:32.4pt;margin:0pt;"><span style="white-space:pre-wrap;">The Company was incorporated in Delaware in 1987, began trading publicly in 1991 and spun off more than half of its operations to stockholders in 1998. The Company actively evaluates potential acquisitions, investment opportunities and other strategic transactions, both domestic and international, that it believes has the potential for generating steady excess cash flows over extended periods of time. In addition, the Company considers non-controlling investments in earlier stage businesses that it considers strategically relevant, and which may offer long-term growth potential for us, either individually, or as research and development businesses that can support the Company’s operating subsidiaries in new technology, product, and service development and offerings. The Company has used the cash generated from its established operating units, and any asset sales, to re-invest in its existing businesses, to make strategic investments in additional businesses, and to return cash to the Company’s investors. The Company provides management, technical, financial, regulatory, and marketing services to its subsidiaries and typically receive a management fee equal to a percentage of their revenues, which is eliminated in consolidation. For further information about the Company’s financial segments and geographical information about its operating revenues and assets, see Notes 1 and 15 to the Consolidated Financial Statements included in this Report.</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">Through December 31, 2020, the Company had identified three operating segments to manage and review its operations and to facilitate investor presentations of its results. Those three operating segments are as follows:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:italic;font-weight:bold;text-align:left;white-space:pre-wrap;">International Telecom. </span><span style="color:#000000;font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">Businesses contained in the Company’s international telecom segment offer a mix of fixed data, internet and voice services (“Fixed”) as well as retail mobility (“Mobility”) services to customers</span><span style="color:#000000;font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:italic;font-weight:bold;text-align:left;"> </span><span style="color:#000000;font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">in Bermuda, the Cayman Islands, Guyana and the US Virgin Islands. The Company offers fixed video services in Bermuda, the Cayman Islands, and the US Virgin Islands and managed information technology services (“Managed Services”) to enterprise customers in all its markets. The Company also offers services to other telecom providers (“Carrier Services”), such as international long-distance, transport and access services, and roaming from such telecom providers’ customers traveling in its network service areas.</span></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 54pt;"><span style="margin-left:0pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:italic;font-weight:bold;text-align:left;white-space:pre-wrap;">US Telecom. </span><span style="color:#000000;font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">In the United States, primarily in the Southwest, the Company offers Carrier Services, including wholesale roaming services, the leasing of critical network infrastructure such as towers and transport facilities, and site maintenance. The Company also provides Fixed, Mobility, and Managed Services to its retail and enterprise customers, and private network services to enterprise customers, municipalities and other service providers.</span></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 54pt;"><span style="margin-left:0pt;visibility:hidden;"></span></p><div style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.31;margin-bottom:0pt;margin-left:36pt;margin-top:0pt;padding-left:18pt;text-indent:-18pt;"><span style="display:inline-block;font-family:'Times New Roman';min-width:14pt;text-indent:0pt;white-space:nowrap;">●</span><span style="font-style:italic;font-weight:bold;">Renewable Energy</span><span style="white-space:pre-wrap;">. </span>In India, the Company provided distributed generation solar power to commercial and industrial customers through January 27, 2021. Through November 6, 2018, the Company also provided </div><div style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.31;margin-bottom:0pt;margin-left:36pt;margin-top:0pt;padding-left:18pt;text-indent:0pt;">distributed generation solar power in the United States in Massachusetts, California and New Jersey. See <i style="font-style:italic;">Sale of Renewable Energy Operations</i> for further details.</div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:34.2pt;margin:0pt;">The following chart summarizes the operating activities of the Company’s principal subsidiaries, the segments in which it reports its revenue and the markets it served as of December 31, 2020:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;white-space:nowrap;width:15.09%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:34.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:35.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:15.09%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Segment</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Services</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:34.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Markets</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:35.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Tradenames</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:15.09%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">International Telecom</b></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:11.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Mobility</p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:34.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Bermuda, Guyana, US Virgin Islands</p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:35.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">One, GTT+, Viya</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:15.09%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:top;white-space:nowrap;width:11.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Fixed</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:top;white-space:nowrap;width:34.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Bermuda, Cayman Islands, Guyana, US Virgin Islands</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:35.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">One, Logic, GTT+, Viya</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.09%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:11.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Carrier Services</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:34.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Bermuda, Guyana, US Virgin Islands</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:35.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">One, GTT+, Viya</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:15.09%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:top;white-space:nowrap;width:11.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Managed Services</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:top;white-space:nowrap;width:34.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Bermuda, Cayman Islands, US Virgin Islands, Guyana</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:top;white-space:nowrap;width:35.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Fireminds, One, Logic, GTT+, Viya</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:15.09%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">US Telecom</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:11.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Mobility</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:34.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">United States (rural markets)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:35.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Choice, Choice NTUA Wireless, Geoverse</p></td></tr><tr><td style="vertical-align:top;white-space:nowrap;width:15.09%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:top;white-space:nowrap;width:11.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Fixed</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:top;white-space:nowrap;width:34.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">United States</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:top;white-space:nowrap;width:35.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Commnet, Choice, Choice NTUA Wireless, Deploycom</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:15.09%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:11.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Carrier Services</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:34.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">United States</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:35.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Commnet, Essextel</p></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:15.09%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:top;white-space:nowrap;width:11.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Managed Services</p></td><td style="vertical-align:top;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:top;white-space:nowrap;width:34.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">United States</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:top;white-space:nowrap;width:35.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Choice</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:15.09%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Renewable</b><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"> </b><b style="font-weight:bold;">Energy </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:11.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Solar</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:34.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">India</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.94%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:35.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Vibrant Energy</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="display:inline-block;text-indent:0pt;width:36pt;"/><span style="white-space:pre-wrap;">The Company actively evaluates potential acquisitions, investment opportunities and other strategic transactions, both domestic and international, that meet its return on investment and other criteria. In addition, the Company considers non-controlling investments in earlier stage businesses that it considers strategically relevant, and which may offer long-term growth potential for the Company, either individually, or as research and development businesses that can support the Company’s operating subsidiaries in new product and service development and offerings. The Company provides management, technical, financial, regulatory, and marketing services to its subsidiaries and typically receives a management fee equal to a percentage of their revenues which is eliminated in consolidation. For information about the Company’s financial segments and geographical information about its operating revenues and assets see Notes 1 and 15 to the Consolidated Financial Statements included in this Report.</span></p>
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	600000
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	100000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	100000
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-6000000.0
CY2020	atni	Period For Retail Revenue Billed In Advance For Postpaid Customers PeriodForRetailRevenueBilledInAdvanceForPostpaidCustomers	P1M
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Use of Estimates</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. The most significant estimates relate to the allowance for credit losses on trade receivables, useful lives of the Company’s fixed and finite-lived intangible assets, allocation of purchase price to assets acquired and liabilities assumed in business combinations, fair value of indefinite-lived intangible assets, goodwill and income taxes. Actual results could differ significantly from those estimates.</p>
CY2020Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	32300000
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4200000
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4000000.0
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Credit Concentrations and Significant Customers</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:12pt 0pt 12pt 0pt;"><span style="display:inline-block;text-indent:0pt;width:36pt;"/>Historically, the Company has been dependent on a limited amount of customers for its wholesale roaming business. For the year ended December 31, 2020 and December 31, 2019, one customer accounted for 10% and 11% of the Company’s consolidated revenue, respectively. For the year ended December 31, 2018, two customers accounted for 11% of the Company’s consolidated revenue. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:12pt 0pt 12pt 0pt;"><span style="display:inline-block;text-indent:0pt;width:36pt;"/>As of December 31, 2020, two customers accounted for more than 10% of the Company’s consolidated accounts receivable. As of December 31, 2019, one customer accounted for more than 10% of the Company’s consolidated accounts receivable.</p>
CY2020	us-gaap	Revenue Practical Expedient Incremental Cost Of Obtaining Contract RevenuePracticalExpedientIncrementalCostOfObtainingContract	true
CY2020	us-gaap	Equity Securities Without Readily Determinable Fair Value Downward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceAdjustmentAnnualAmount	800000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15923000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15983000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15988000
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	54000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	15923000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	15983000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16042000
CY2020	atni	Period For Retail Revenue Billed In Advance For Postpaid Customers PeriodForRetailRevenueBilledInAdvanceForPostpaidCustomers	P1M
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	2478000
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	2413000
CY2020	atni	Contract With Customer Asset Current Cumulative Catch Up Adjustment To Revenue Timing Of Customer Prepayments And Contract Billings ContractWithCustomerAssetCurrentCumulativeCatchUpAdjustmentToRevenueTimingOfCustomerPrepaymentsAndContractBillings	65000
CY2020	atni	Percentage Of Change In Contract With Customer Assets Current PercentageOfChangeInContractWithCustomerAssetsCurrent	0.03
CY2020Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	910000
CY2019Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	905000
CY2020	atni	Contract With Customer Asset Noncurrent Cumulative Catch Up Adjustment To Revenue Timing Of Customer Prepayments And Contract Billings ContractWithCustomerAssetNoncurrentCumulativeCatchUpAdjustmentToRevenueTimingOfCustomerPrepaymentsAndContractBillings	5000
CY2020	atni	Percentage Of Change In Contract With Customer Assets Noncurrent PercentageOfChangeInContractWithCustomerAssetsNoncurrent	0.01
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	18544000
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	15044000
CY2020	atni	Contract With Customer Liability Current Cumulative Catch Up Adjustment To Revenue Change In Measure Of Progress ContractWithCustomerLiabilityCurrentCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress	3500000
CY2020	atni	Percentage Of Change In Contract With Customer Liability Current PercentageOfChangeInContractWithCustomerLiabilityCurrent	0.23
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	2193000
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	5450000
CY2020	atni	Contract With Customer Liability Non Current Cumulative Catch Up Adjustment To Revenue Change In Measure Of Progress ContractWithCustomerLiabilityNonCurrentCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress	-3257000
CY2020	atni	Percentage Of Change In Contract With Customer Liability Non Current PercentageOfChangeInContractWithCustomerLiabilityNonCurrent	0.60
CY2020Q4	atni	Contract With Customer Asset Liability Net ContractWithCustomerAssetLiabilityNet	-17349000
CY2019Q4	atni	Contract With Customer Asset Liability Net ContractWithCustomerAssetLiabilityNet	-17176000
CY2020	atni	Contract With Customer Asset Liability Net Cumulative Catch Up Adjustment To Revenue Timing Of Customer Prepayments And Contract Billings ContractWithCustomerAssetLiabilityNetCumulativeCatchUpAdjustmentToRevenueTimingOfCustomerPrepaymentsAndContractBillings	-173000
CY2020	atni	Percentage Of Change In Contract With Customer Net Assets Liability PercentageOfChangeInContractWithCustomerNetAssetsLiability	-0.01
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	299000000
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	16409000
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	15194000
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	241000000
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P24M
CY2020	us-gaap	Revenue Practical Expedient Initial Application And Transition Nondisclosure Of Transaction Price Allocation To Remaining Performance Obligation RevenuePracticalExpedientInitialApplicationAndTransitionNondisclosureOfTransactionPriceAllocationToRemainingPerformanceObligation	true
CY2020	us-gaap	Revenue Practical Expedient Initial Application And Transition Nondisclosure Of Transaction Price Allocation To Remaining Performance Obligation RevenuePracticalExpedientInitialApplicationAndTransitionNondisclosureOfTransactionPriceAllocationToRemainingPerformanceObligation	true
CY2020Q4	us-gaap	Accounts Receivable Gross AccountsReceivableGross	67100000
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	57500000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12100000
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	48600000
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12700000
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12724000
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5010000
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	6351000
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	738000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12121000
CY2020Q4	us-gaap	Accounts Receivable Gross AccountsReceivableGross	67114000
CY2019Q4	us-gaap	Accounts Receivable Gross AccountsReceivableGross	48628000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12121000
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12724000
CY2020Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	54993000
CY2019Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	35904000
CY2020	us-gaap	Lease Practical Expedients Package LeasePracticalExpedientsPackage	true
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2712000
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3426000
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	4059000
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	2803000
CY2020	atni	Total Operating Lease Cost TotalOperatingLeaseCost	23180000
CY2019	atni	Total Operating Lease Cost TotalOperatingLeaseCost	21423000
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2181000
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2318000
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	852000
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	964000
CY2020	atni	Total Finance Lease Cost TotalFinanceLeaseCost	3033000
CY2019	atni	Total Finance Lease Cost TotalFinanceLeaseCost	3282000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	16100000
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	15100000
CY2020	atni	Operating And Finance Lease Liability Obtained In Exchange For Right Of Use Asset OperatingAndFinanceLeaseLiabilityObtainedInExchangeForRightOfUseAsset	7800000
CY2019	atni	Operating And Finance Lease Liability Obtained In Exchange For Right Of Use Asset OperatingAndFinanceLeaseLiabilityObtainedInExchangeForRightOfUseAsset	9700000
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	25400000
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	9500000
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	400000
CY2020	atni	Finance Lease Liabilities Recognized FinanceLeaseLiabilitiesRecognized	1600000
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1200000
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	300000
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	25900000
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	9400000
CY2020	atni	Summary Of Weighted Average Remaining Lease Term And Discount Rate SummaryOfWeightedAverageRemainingLeaseTermAndDiscountRate	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:0.0pt;margin:0pt;"><span style="font-size:0pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:50%;transform:translate(0,-50%);width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:18.18%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.27%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:18.9%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td></tr><tr><td style="vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td colspan="2" style="vertical-align:middle;width:21.21%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, 2020</b></p></td><td style="vertical-align:middle;width:2.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td><td colspan="2" style="vertical-align:middle;width:21.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, 2019</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Weighted-average remaining lease term</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr><tr><td style="vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">Operating leases</p></td><td style="vertical-align:middle;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;">5.9 years</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;">6.5 years</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">Financing leases</p></td><td style="background-color:#cceeff;vertical-align:middle;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;">10.9 years</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;">11.7 years</p></td></tr><tr><td style="vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Weighted-average discount rate</p></td><td style="background-color:#cceeff;vertical-align:middle;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr><tr><td style="vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">Operating leases</p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;">5.0%</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:18.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;">5.0%</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:middle;width:54.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">Financing leases</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;">3.3%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:18.9%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;">n/a</p></td></tr></table>
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y10M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y6M
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P10Y10M24D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P11Y8M12D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.050
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.050
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.033
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	15211000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	14535000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	12132000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	10844000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	7816000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	13094000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	73632000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	10179000
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	63453000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	14526000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	13714000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	12787000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	10713000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	9671000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	18355000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	79766000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	12195000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	67571000
CY2020Q4	atni	Property Plant And Equipment Gross Excluding Construction In Progress PropertyPlantAndEquipmentGrossExcludingConstructionInProgress	1201871000
CY2019Q4	atni	Property Plant And Equipment Gross Excluding Construction In Progress PropertyPlantAndEquipmentGrossExcludingConstructionInProgress	1190375000
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1252780000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1237555000
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	716318000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	631974000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	536462000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	605581000
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	86500000
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	86900000
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	83000000.0
CY2020	atni	Capital Expenditure Grant CapitalExpenditureGrant	16300000
CY2019	atni	Capital Expenditure Grant CapitalExpenditureGrant	3100000
CY2020Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized After Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization	5600000
CY2019Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized After Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization	3600000
CY2020	us-gaap	Hosting Arrangement Service Contract Implementation Cost Expense Amortization HostingArrangementServiceContractImplementationCostExpenseAmortization	700000
CY2019	us-gaap	Hosting Arrangement Service Contract Implementation Cost Expense Amortization HostingArrangementServiceContractImplementationCostExpenseAmortization	200000
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2018Q4	us-gaap	Goodwill Goodwill	63970000
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	3279000
CY2019Q4	us-gaap	Goodwill Goodwill	60691000
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2020Q4	us-gaap	Goodwill Goodwill	60691000
CY2019Q4	us-gaap	Goodwill Gross GoodwillGross	63970000
CY2019Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	3279000
CY2019Q4	us-gaap	Goodwill Goodwill	60691000
CY2020Q4	us-gaap	Goodwill Gross GoodwillGross	60691000
CY2020Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	0
CY2020Q4	us-gaap	Goodwill Goodwill	60691000
CY2020	atni	Schedule Of Shares Repurchases To Satisfy Tax Withholdings ScheduleOfSharesRepurchasesToSatisfyTaxWithholdings	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:0.0pt;margin:0pt;"><span style="font-size:0pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:83.36%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:56.21%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.78%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.08%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.12%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.89%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:3.18%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.68%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.07%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td></tr><tr><td style="vertical-align:bottom;white-space:nowrap;width:56.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.01%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Aggregate</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.68%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr><tr><td style="vertical-align:bottom;width:56.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Shares</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.01%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Cost</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:14.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Average</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr><tr><td style="vertical-align:bottom;width:56.21%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">Year ended December 31, </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-family:'Calibri','Helvetica','sans-serif';font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.08%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Repurchased</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:12.01%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">(in thousands)</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:14.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Repurchase Price</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">2020</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 32,227</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 1,733</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.68%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 53.78</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr><tr><td style="vertical-align:bottom;width:56.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">2019</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 42,703</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 2,419</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.68%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 56.65</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">2018</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 141,180</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 10,859</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.68%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.6pt 0pt 0pt;"> 76.76</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-family:'Calibri','Helvetica','sans-serif';font-size:11pt;visibility:hidden;"></span></p></td></tr></table>
CY2020	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	32227
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1733000
CY2020	atni	Treasury Stock Acquired Average Cost Per Share Related To Tax Withholding For Share Based Compensation TreasuryStockAcquiredAverageCostPerShareRelatedToTaxWithholdingForShareBasedCompensation	53.78
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	42703
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2419000
CY2019	atni	Treasury Stock Acquired Average Cost Per Share Related To Tax Withholding For Share Based Compensation TreasuryStockAcquiredAverageCostPerShareRelatedToTaxWithholdingForShareBasedCompensation	56.65
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	141180
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10859000
CY2018	atni	Treasury Stock Acquired Average Cost Per Share Related To Tax Withholding For Share Based Compensation TreasuryStockAcquiredAverageCostPerShareRelatedToTaxWithholdingForShareBasedCompensation	76.76
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2000000
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	610000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-17689000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-15661000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	28917000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	17782000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	21733000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	24825000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	93000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6072000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	53742000
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	20000
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1275000
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	11286000
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	851000
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	648000
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	1114000
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1866000
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-1769000
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-2662000
CY2020	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-520000
CY2019	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-244000
CY2018	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-4683000
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1504000
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	3781000
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1610000
CY2020	atni	Effective Income Tax Rate Reconciliation Deduction Cares Act Benefit Amount EffectiveIncomeTaxRateReconciliationDeductionCaresActBenefitAmount	3064000
CY2019	atni	Effective Income Tax Rate Reconciliation Capitalized Transaction Costs EffectiveIncomeTaxRateReconciliationCapitalizedTransactionCosts	19000
CY2018	atni	Effective Income Tax Rate Reconciliation Capitalized Transaction Costs EffectiveIncomeTaxRateReconciliationCapitalizedTransactionCosts	62000
CY2020	atni	Income Tax Reconciliation Foreign Tax Reserve IncomeTaxReconciliationForeignTaxReserve	2148000
CY2019	atni	Income Tax Reconciliation Foreign Tax Reserve IncomeTaxReconciliationForeignTaxReserve	3883000
CY2018	atni	Income Tax Reconciliation Foreign Tax Reserve IncomeTaxReconciliationForeignTaxReserve	10657000
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-409000
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-429000
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1674000
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	33000
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-35000
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1539000
CY2020	atni	Effective Income Tax Rate Reconciliation Tax Credit Expense Investment Amount EffectiveIncomeTaxRateReconciliationTaxCreditExpenseInvestmentAmount	-84000
CY2019	atni	Effective Income Tax Rate Reconciliation Tax Credit Expense Investment Amount EffectiveIncomeTaxRateReconciliationTaxCreditExpenseInvestmentAmount	1215000
CY2018	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	-235000
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-148000
CY2018	atni	Income Tax Reconciliation Capital Loss IncomeTaxReconciliationCapitalLoss	-15000
CY2020	atni	Effective Income Tax Rate Reconciliation Change In Deferred Tax Revaluation Amount EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxRevaluationAmount	-10000
CY2019	atni	Effective Income Tax Rate Reconciliation Change In Deferred Tax Revaluation Amount EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxRevaluationAmount	-513000
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	399000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	801000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4105000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18870000
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	504000
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1559000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	24546000
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3000
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-336000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4506000
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	7611000
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	8192000
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	13060000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8118000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	6297000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	42112000
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-6527000
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1805000
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-17947000
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-413000
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-93000
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2832000
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-377000
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-294000
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-2463000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7317000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2192000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-23242000
CY2020	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-6023000
CY2019	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-3364000
CY2018	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	6599000
CY2020	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-410000
CY2019	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-429000
CY2018	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	1674000
CY2020	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	7234000
CY2019	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	7898000
CY2018	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	10597000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	801000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4105000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18870000
CY2020Q4	atni	Deferred Tax Assets Accounts Receivable And Inventory DeferredTaxAssetsAccountsReceivableAndInventory	1972000
CY2019Q4	atni	Deferred Tax Assets Accounts Receivable And Inventory DeferredTaxAssetsAccountsReceivableAndInventory	1603000
CY2020Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	7512000
CY2019Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	6937000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	4701000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	5923000
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	3141000
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	2864000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	4363000
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CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	40800000
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CY2018Q4	atni	Unrecognized Tax Benefits Excluding Interest And Penalties UnrecognizedTaxBenefitsExcludingInterestAndPenalties	30232000
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CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	40700000
CY2020Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	22771000
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CY2020Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	1838000
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CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	455444000
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CY2019Q4	us-gaap	Assets Assets	1130726000
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CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	75323000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	72725000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	455444000
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	843647000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	438722000
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CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	110905000
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CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1213000
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CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1834000
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1332000
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CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
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CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3485000
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6106000
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6283000
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-15781000
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1109000
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2258000
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	92000
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1858000
CY2020Q1	us-gaap	Profit Loss ProfitLoss	2376000
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CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3390000
CY2020Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3618000
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3530000
CY2020Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2876000
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1014000
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CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2661000
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CY2019Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-3570000
CY2019Q3	us-gaap	Profit Loss ProfitLoss	4844000
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CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2316000
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CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3459000
CY2019Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4115000
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CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	47904000
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	47904000
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	16627000
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	12401000
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	52130000
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	52130000
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	5785000
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	14780000
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	43135000

Files In Submission

Name	View Source	Status
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$ATNI
ATN International, Inc. Stock $atni

2020 Q4 Form 10-K Financial Statement

#000155837021002145 Filed on March 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ATNI ATN International, Inc. Stock $atni

2020 Q4 Form 10-K Financial Statement

#000155837021002145 Filed on March 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ATNI
ATN International, Inc. Stock $atni