$IRDM
Iridium Communications Inc. Stock $irdm

$irdm Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000141881921000009 Filed on February 11, 2021

Income Statement

Concept	2020 Q4	2020 Q3	2020 Q2
Revenue	$146.5M	$151.5M	$140.2M
YoY Change	5.5%	4.62%	-2.05%
Cost Of Revenue	$33.90M	$39.30M	$35.20M
YoY Change	-2.59%	7.97%	-9.74%
Gross Profit	$112.6M	$112.1M	$105.0M
YoY Change	8.17%	3.51%	0.86%
Gross Profit Margin	76.86%	74.01%	74.91%
Selling, General & Admin	$27.50M	$20.63M	$21.10M
YoY Change	8.27%	-10.04%	0.62%
% of Gross Profit	24.42%	18.4%	20.1%
Research & Development	$4.100M	$3.116M	$2.380M
YoY Change	13.89%	10.42%	-44.46%
% of Gross Profit	3.64%	2.78%	2.27%
Depreciation & Amortization	$75.90M	$75.65M	$75.66M
YoY Change	1.07%	1.45%	0.71%
% of Gross Profit	67.41%	67.49%	72.06%
Operating Expenses	$107.5M	$23.75M	$23.48M
YoY Change	3.27%	-7.8%	-7.02%
Operating Profit	$5.100M	$12.73M	$5.828M
YoY Change	509900.0%	58.94%	55.79%
Interest Expense	-$22.70M	-$22.60M	-$22.50M
YoY Change	-24.58%	-25.9%	-22.41%
% of Operating Profit	-445.1%	-177.49%	-386.07%
Other Income/Expense, Net	-$300.0K	-$22.42M	-$22.83M
YoY Change	50.0%	-26.4%	-22.92%
Pretax Income	-$17.90M	-$9.700M	-$17.00M
YoY Change	-87.39%	-56.8%	-34.29%
Income Tax	-$10.00M	-$5.700M	-$4.600M
% Of Pretax Income
Net Earnings	-$7.925M	-$4.005M	-$12.42M
YoY Change	-92.65%	-77.76%	-31.39%
Net Earnings / Revenue	-5.41%	-2.64%	-8.86%
Basic Earnings Per Share
Diluted Earnings Per Share	-$58.78K	-$29.90K	-$93.16K
COMMON SHARES
Basic Shares Outstanding	133.3M shares	132.5M shares	133.1M shares
Diluted Shares Outstanding			133.1M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2020 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$244.7M	$182.7M	$119.1M
YoY Change	9.47%	6.47%	-32.25%
Cash & Equivalents	$237.2M	$182.7M	$119.1M
Short-Term Investments	$7.548M
Other Short-Term Assets	$9.500M	$11.20M	$12.50M
YoY Change	-11.21%	-18.25%	-21.88%
Inventory	$32.48M	$33.31M	$37.33M
Prepaid Expenses
Receivables	$61.15M	$59.34M	$60.40M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$347.8M	$286.5M	$229.3M
YoY Change	1.42%	-2.51%	-28.51%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.917B	$2.981B	$3.046B
YoY Change	-8.29%	-7.95%	-7.8%
Goodwill
YoY Change
Intangibles	$45.50M	$45.88M	$46.27M
YoY Change	-3.14%	-3.09%	-3.1%
Long-Term Investments
YoY Change
Other Assets	$50.55M	$51.74M	$52.22M
YoY Change	-4.35%	0.19%	2.91%
Total Long-Term Assets	$3.013B	$3.079B	$3.145B
YoY Change	-8.15%	-12.85%	-12.56%
TOTAL ASSETS
Total Short-Term Assets	$347.8M	$286.5M	$229.3M
Total Long-Term Assets	$3.013B	$3.079B	$3.145B
Total Assets	$3.361B	$3.366B	$3.374B
YoY Change	-7.25%	-12.06%	-13.87%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$14.39M	$7.181M	$8.519M
YoY Change	114.36%	-47.55%	-31.8%
Accrued Expenses	$49.50M	$40.73M	$38.41M
YoY Change	0.43%	16.35%	13.91%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$16.77M	$16.50M	$16.50M
YoY Change	54.17%	-92.36%	-90.35%
Total Short-Term Liabilities	$113.1M	$100.7M	$101.9M
YoY Change	-0.6%	-68.84%	-64.22%
LONG-TERM LIABILITIES
Long-Term Debt	$1.597B	$1.600B	$1.604B
YoY Change	-9.55%	-1.91%	-7.99%
Other Long-Term Liabilities	$25.20M	$31.35M	$34.09M
YoY Change	-13.94%	9.65%	16.19%
Total Long-Term Liabilities	$25.20M	$31.35M	$34.09M
YoY Change	-13.94%	9.65%	16.19%
TOTAL LIABILITIES
Total Short-Term Liabilities	$113.1M	$100.7M	$101.9M
Total Long-Term Liabilities	$25.20M	$31.35M	$34.09M
Total Liabilities	$1.942B	$1.950B	$1.965B
YoY Change	-10.29%	-14.01%	-16.19%
SHAREHOLDERS EQUITY
Retained Earnings	$275.9M	$283.8M	$287.8M
YoY Change	-16.89%	-35.47%	-37.13%
Common Stock	$1.161B	$1.152B	$1.142B
YoY Change	2.34%	2.2%	1.79%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.419B	$1.415B	$1.409B
YoY Change
Total Liabilities & Shareholders Equity	$3.361B	$3.366B	$3.374B
YoY Change	-7.25%	-12.06%	-13.87%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2020 Q2
OPERATING ACTIVITIES
Net Income	-$7.925M	-$4.005M	-$12.42M
YoY Change	-92.65%	-77.76%	-31.39%
Depreciation, Depletion And Amortization	$75.90M	$75.65M	$75.66M
YoY Change	1.07%	1.45%	0.71%
Cash From Operating Activities	$70.70M	$74.60M	$63.70M
YoY Change	27.16%	-4.85%	298.13%
INVESTING ACTIVITIES
Capital Expenditures	-$9.400M	-$10.60M	-$9.200M
YoY Change	-37.33%	3.92%	-84.14%
Acquisitions
YoY Change
Other Investing Activities	-$7.800M	$0.00	$0.00
YoY Change
Cash From Investing Activities	-$17.20M	-$10.60M	-$9.200M
YoY Change	14.67%	3.92%	-84.14%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	300.0K	600.0K	-3.100M
YoY Change	-100.16%	-100.84%	-94.46%
NET CHANGE
Cash From Operating Activities	70.70M	74.60M	63.70M
Cash From Investing Activities	-17.20M	-10.60M	-9.200M
Cash From Financing Activities	300.0K	600.0K	-3.100M
Net Change In Cash	53.80M	64.60M	51.40M
YoY Change	-137.36%	-2183.87%	-152.45%
FREE CASH FLOW
Cash From Operating Activities	$70.70M	$74.60M	$63.70M
Capital Expenditures	-$9.400M	-$10.60M	-$9.200M
Free Cash Flow	$80.10M	$85.20M	$72.90M
YoY Change	13.46%	-3.84%	-1.49%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	223561000	USD
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	134055756	shares
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Trading Symbol TradingSymbol	IRDM
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001418819
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	131632000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	134055756	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	131632000	shares
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1600000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1600000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	0	USD
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2019	irdm	No Single Customer Over10 Total Revenue Commercial NoSingleCustomerOver10TotalRevenueCommercial	0.10
CY2019	irdm	No Single Customer Over10 Total Revenue Government NoSingleCustomerOver10TotalRevenueGovernment	0.10
CY2019Q4	irdm	No Single Country Greaterthan Stated Percentage Ppe NoSingleCountryGreaterthanStatedPercentagePPE	0.10
CY2019	irdm	No Single Countryor Region Representing More Than Stated Percentageof Total Revenue NoSingleCountryorRegionRepresentingMoreThanStatedPercentageofTotalRevenue	0.10
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	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-33963
CY2020	dei	Entity Registrant Name EntityRegistrantName	Iridium Communications Inc.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	26-1344998
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	1750 Tysons Boulevard, Suite 1400
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	McLean
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	VA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	22102
CY2020	dei	City Area Code CityAreaCode	703
CY2020	dei	Local Phone Number LocalPhoneNumber	287-7400
CY2020	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value
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	2895000000.0	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	134279633	shares
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	237178000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	223561000	USD
CY2020Q4	us-gaap	Marketable Securities MarketableSecurities	7548000	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	0	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	61151000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	68697000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	32480000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	39938000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	9464000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	10739000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	347821000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	342935000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2917076000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3180799000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	14390000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	50548000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	52846000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	45504000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	46977000	USD
CY2020Q4	us-gaap	Assets Assets	3360949000	USD
CY2019Q4	us-gaap	Assets Assets	3623557000	USD
CY2020Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	16766000	USD
CY2019Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	10875000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	6713000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	49258000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	49293000	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	246000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	7790000	USD
CY2020Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	32412000	USD
CY2019Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	39080000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	113072000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	113751000	USD
CY2020Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	1596893000	USD
CY2019Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	1412501000	USD
CY2020Q4	us-gaap	Senior Long Term Notes SeniorLongTermNotes	0	USD
CY2019Q4	us-gaap	Senior Long Term Notes SeniorLongTermNotes	352994000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	155084000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	188653000	USD
CY2020Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	51258000	USD
CY2019Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	67092000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	25203000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	29284000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	1941510000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	2164275000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	134000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	132000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1160570000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1134048000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	275915000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	331969000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-17180000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-6867000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1419439000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1459282000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3360949000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3623557000	USD
CY2020	irdm	Service Revenue ServiceRevenue	463095000	USD
CY2019	irdm	Service Revenue ServiceRevenue	447158000	USD
CY2018	irdm	Service Revenue ServiceRevenue	406757000	USD
CY2020	irdm	Sales Revenue Subscriber Equipment Net SalesRevenueSubscriberEquipmentNet	86119000	USD
CY2019	irdm	Sales Revenue Subscriber Equipment Net SalesRevenueSubscriberEquipmentNet	82856000	USD
CY2018	irdm	Sales Revenue Subscriber Equipment Net SalesRevenueSubscriberEquipmentNet	97848000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	34225000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	30430000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	18403000	USD
CY2020	us-gaap	Revenues Revenues	583439000	USD
CY2019	us-gaap	Revenues Revenues	560444000	USD
CY2018	us-gaap	Revenues Revenues	523008000	USD
CY2020	irdm	Costof Services Net CostofServicesNet	91097000	USD
CY2019	irdm	Costof Services Net CostofServicesNet	94958000	USD
CY2018	irdm	Costof Services Net CostofServicesNet	86016000	USD
CY2020	irdm	Costof Subscriber Equipment Sold CostofSubscriberEquipmentSold	51596000	USD
CY2019	irdm	Costof Subscriber Equipment Sold CostofSubscriberEquipmentSold	50186000	USD
CY2018	irdm	Costof Subscriber Equipment Sold CostofSubscriberEquipmentSold	56857000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	12037000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	14310000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	22429000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	90052000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	481355000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	35483000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	93165000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	97846000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	303174000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	297705000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	218207000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	547956000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	550324000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	10120000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	41653000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-94271000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-115396000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-55149000	USD
CY2020	irdm	Losson Extinguishmentof Debt LossonExtinguishmentofDebt	30209000	USD
CY2019	irdm	Losson Extinguishmentof Debt LossonExtinguishmentofDebt	111710000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-56054000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-62302000	USD
CY2018	irdm	Losson Extinguishmentof Debt LossonExtinguishmentofDebt	7292000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	33000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1133000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	139000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-124447000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-228239000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-88964000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-218119000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-20649000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-32910000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-56120000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7265000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-56054000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-161999000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-13384000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-166193000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-23533000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	133491000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	125167000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108975000	shares
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.42
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-1.33
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.22
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-56054000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-161999000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-13384000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-3272000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	2051000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-5017000	USD
CY2020	us-gaap	Unrealized Gain Loss On Cash Flow Hedging Instruments UnrealizedGainLossOnCashFlowHedgingInstruments	-7036000	USD
CY2019	us-gaap	Unrealized Gain Loss On Cash Flow Hedging Instruments UnrealizedGainLossOnCashFlowHedgingInstruments	-121000	USD
CY2018	us-gaap	Unrealized Gain Loss On Cash Flow Hedging Instruments UnrealizedGainLossOnCashFlowHedgingInstruments	0	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-5000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-66367000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	16000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-160069000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-18385000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1596469000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16727000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	12445000	USD
CY2018	irdm	Adjustments To Additional Paid In Capital Stock Withheld To Cover Employee Taxes AdjustmentsToAdditionalPaidInCapitalStockWithheldToCoverEmployeeTaxes	1981000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-13384000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-5017000	USD
CY2018	irdm	Cumulative Effectof New Accounting Pronouncement Asu201409 CumulativeEffectofNewAccountingPronouncementASU201409	11729000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1601577000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16641000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	13471000	USD
CY2019	irdm	Adjustments To Additional Paid In Capital Stock Withheld To Cover Employee Taxes AdjustmentsToAdditionalPaidInCapitalStockWithheldToCoverEmployeeTaxes	4594000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-161999000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	2051000	USD
CY2019	us-gaap	Unrealized Gain Loss On Cash Flow Hedging Instruments UnrealizedGainLossOnCashFlowHedgingInstruments	-121000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1459282000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	18322000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	12715000	USD
CY2020	irdm	Adjustments To Additional Paid In Capital Stock Withheld To Cover Employee Taxes AdjustmentsToAdditionalPaidInCapitalStockWithheldToCoverEmployeeTaxes	4513000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-56054000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-56054000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-3272000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-5000	USD
CY2020	us-gaap	Unrealized Gain Loss On Cash Flow Hedging Instruments UnrealizedGainLossOnCashFlowHedgingInstruments	-7036000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1419439000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-56054000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-161999000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-13384000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-33684000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-53897000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8334000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	303174000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	297705000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	218207000	USD
CY2020	irdm	Losson Extinguishmentof Debt LossonExtinguishmentofDebt	30209000	USD
CY2019	irdm	Losson Extinguishmentof Debt LossonExtinguishmentofDebt	111710000	USD
CY2018	irdm	Losson Extinguishmentof Debt LossonExtinguishmentofDebt	7292000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	16714000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	15138000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	14490000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3658000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	18904000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	10145000	USD
CY2020	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1124000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	952000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	174000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-6380000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-2509000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	12783000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-7234000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	12951000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	7579000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1119000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-7973000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-5705000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-3241000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-3097000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	1417000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	7410000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-4300000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-732000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-8590000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-4174000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	17560000	USD
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-7072000	USD
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-12919000	USD
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	20237000	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-21692000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-6435000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	13530000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-3404000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-3170000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	598000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	249767000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	198143000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	263709000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	38689000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	117819000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	391390000	USD
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	152000	USD
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	10000000	USD
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	0	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	7629000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	235528000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	0	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	248006000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-46470000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-127819000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-378912000	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1734965000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	80359000	USD
CY2020	us-gaap	Debt Instrument Periodic Payment DebtInstrumentPeriodicPayment	12375000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	202000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1450000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2019	us-gaap	Debt Instrument Periodic Payment DebtInstrumentPeriodicPayment	0	USD
CY2018	us-gaap	Debt Instrument Periodic Payment DebtInstrumentPeriodicPayment	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	360000000	USD
CY2020	us-gaap	Repayments Of Debt RepaymentsOfDebt	383451000	USD
CY2019	us-gaap	Repayments Of Debt RepaymentsOfDebt	0	USD
CY2018	us-gaap	Repayments Of Debt RepaymentsOfDebt	0	USD
CY2020	irdm	Debt Instrument Milestone Payment DebtInstrumentMilestonePayment	0	USD
CY2019	irdm	Debt Instrument Milestone Payment DebtInstrumentMilestonePayment	0	USD
CY2018	irdm	Debt Instrument Milestone Payment DebtInstrumentMilestonePayment	-59936000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2562000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	28803000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	193503000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1494000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1230000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1270000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	13617000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	21239000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	12715000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	13471000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	12445000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4513000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4596000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1981000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-188186000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-313280000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-241726000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	77030000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	223561000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	465287000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	465287000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	388257000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	237178000	USD
CY2020	irdm	Interest Paid Netof Amounts Capitalized InterestPaidNetofAmountsCapitalized	98714000	USD
CY2019	irdm	Interest Paid Netof Amounts Capitalized InterestPaidNetofAmountsCapitalized	119464000	USD
CY2018	irdm	Interest Paid Netof Amounts Capitalized InterestPaidNetofAmountsCapitalized	35690000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-661000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-606000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	931000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3721000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3975000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	11900000	USD
CY2020	irdm	Interest Capitalized But Not Paid InterestCapitalizedButNotPaid	0	USD
CY2019	irdm	Interest Capitalized But Not Paid InterestCapitalizedButNotPaid	0	USD
CY2018	irdm	Interest Capitalized But Not Paid InterestCapitalizedButNotPaid	9194000	USD
CY2020	irdm	Capitalized Amortization Of Deferred Financing Costs CapitalizedAmortizationOfDeferredFinancingCosts	115000	USD
CY2019	irdm	Capitalized Amortization Of Deferred Financing Costs CapitalizedAmortizationOfDeferredFinancingCosts	2416000	USD
CY2018	irdm	Capitalized Amortization Of Deferred Financing Costs CapitalizedAmortizationOfDeferredFinancingCosts	16306000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1608000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1503000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	2237000	USD
CY2020	irdm	Credit Facility Repaymentin Exchangefor Settlementof Hosting CreditFacilityRepaymentinExchangeforSettlementofHosting	0	USD
CY2019	irdm	Credit Facility Repaymentin Exchangefor Settlementof Hosting CreditFacilityRepaymentinExchangeforSettlementofHosting	0	USD
CY2018	irdm	Credit Facility Repaymentin Exchangefor Settlementof Hosting CreditFacilityRepaymentinExchangeforSettlementofHosting	35000000	USD
CY2020	irdm	Cost Basis Investmentin Exchangefor Settlementof Accounts Receivable CostBasisInvestmentinExchangeforSettlementofAccountsReceivable	0	USD
CY2019	irdm	Cost Basis Investmentin Exchangefor Settlementof Accounts Receivable CostBasisInvestmentinExchangeforSettlementofAccountsReceivable	0	USD
CY2018	irdm	Cost Basis Investmentin Exchangefor Settlementof Accounts Receivable CostBasisInvestmentinExchangeforSettlementofAccountsReceivable	3300000	USD
CY2020	us-gaap	Unrealized Loss On Foreign Currency Derivatives Before Tax UnrealizedLossOnForeignCurrencyDerivativesBeforeTax	7036000	USD
CY2019	us-gaap	Unrealized Loss On Foreign Currency Derivatives Before Tax UnrealizedLossOnForeignCurrencyDerivativesBeforeTax	118000	USD
CY2018	us-gaap	Unrealized Loss On Foreign Currency Derivatives Before Tax UnrealizedLossOnForeignCurrencyDerivativesBeforeTax	0	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates and assumptions, including those related to revenue recognition, the useful lives and recoverability of long-lived and intangible assets, income taxes, stock-based compensation, estimating the Company's incremental borrowing rate for its leases, and contingencies, among others. The Company bases these estimates on historical and anticipated results, trends, and various other assumptions that it believes are reasonable, including assumptions as to future events. These estimates form the basis for making judgments about the carrying values of assets and liabilities and recorded revenues and expenses. Actual results could differ materially from those estimates.</span></div>
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentrations of Credit Risk</span></div><div style="margin-top:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents and receivables. The majority of cash is invested into a money market fund with U.S. treasuries, Agency Mortgage Backed Securities and/or U.S. government guaranteed debt. While the Company maintains its cash and cash equivalents with financial institutions with high credit ratings, it often maintains those deposits in federally insured financial institutions in excess of federally insured limits. The Company performs credit evaluations of its customers’ financial condition and records reserves to provide for estimated credit losses. Accounts receivable are due from both domestic and international customers.</span></div>
CY2020	irdm	Definition Three Year Cumulative Inflation Rate Highly Inflationary Economy DefinitionThreeYearCumulativeInflationRateHighlyInflationaryEconomy	1	Rate
CY2020	irdm	Share Based Compensation Propertyand Equipment Net ShareBasedCompensationPropertyandEquipmentNet	1319000	USD
CY2019	irdm	Share Based Compensation Propertyand Equipment Net ShareBasedCompensationPropertyandEquipmentNet	1187000	USD
CY2020	irdm	Share Based Compensation Inventory Net ShareBasedCompensationInventoryNet	261000	USD
CY2019	irdm	Share Based Compensation Inventory Net ShareBasedCompensationInventoryNet	237000	USD
CY2020	irdm	Share Based Compensation Prepaidand Other Assets ShareBasedCompensationPrepaidandOtherAssets	28000	USD
CY2019	irdm	Share Based Compensation Prepaidand Other Assets ShareBasedCompensationPrepaidandOtherAssets	79000	USD
CY2020	irdm	Share Based Compensation Equipment Expense ShareBasedCompensationEquipmentExpense	29000	USD
CY2019	irdm	Share Based Compensation Equipment Expense ShareBasedCompensationEquipmentExpense	23000	USD
CY2020	irdm	Share Based Compensation Costof Services ShareBasedCompensationCostofServices	5037000	USD
CY2019	irdm	Share Based Compensation Costof Services ShareBasedCompensationCostofServices	4326000	USD
CY2020	irdm	Share Based Compensation Researchand Development ShareBasedCompensationResearchandDevelopment	305000	USD
CY2019	irdm	Share Based Compensation Researchand Development ShareBasedCompensationResearchandDevelopment	243000	USD
CY2020	irdm	Share Based Compensation Selling Generaland Administrative Expense ShareBasedCompensationSellingGeneralandAdministrativeExpense	11343000	USD
CY2019	irdm	Share Based Compensation Selling Generaland Administrative Expense ShareBasedCompensationSellingGeneralandAdministrativeExpense	10546000	USD
CY2020	irdm	Share Based Compensation Expensed And Capitalized ShareBasedCompensationExpensedAndCapitalized	18322000	USD
CY2019	irdm	Share Based Compensation Expensed And Capitalized ShareBasedCompensationExpensedAndCapitalized	16641000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	1200000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	900000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	400000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	5530000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	5525000	USD
CY2020Q4	us-gaap	Cash Cash	27168000	USD
CY2019Q4	us-gaap	Cash Cash	13943000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	237178000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	223561000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	7600000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	7500000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	22513000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	2024000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	241793000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	2023000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	7554000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	7548000	USD
CY2020Q4	irdm	Satellite System Gross SatelliteSystemGross	3197460000	USD
CY2019Q4	irdm	Satellite System Gross SatelliteSystemGross	3197460000	USD
CY2020Q4	irdm	Ground System Gross GroundSystemGross	64581000	USD
CY2019Q4	irdm	Ground System Gross GroundSystemGross	66789000	USD
CY2020Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	44871000	USD
CY2019Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	45406000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	251320000	USD
CY2020Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	29924000	USD
CY2019Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	31050000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	3588156000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	3582498000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	959606000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	682130000	USD
CY2020Q4	irdm	Property Plant And Equipment Net Excluding Construction In Process And Land PropertyPlantAndEquipmentNetExcludingConstructionInProcessAndLand	2628550000	USD
CY2019Q4	irdm	Property Plant And Equipment Net Excluding Construction In Process And Land PropertyPlantAndEquipmentNetExcludingConstructionInProcessAndLand	2900368000	USD
CY2020Q4	us-gaap	Land Land	8037000	USD
CY2019Q4	us-gaap	Land Land	8037000	USD
CY2020Q4	irdm	Ground Spares GroundSpares	225254000	USD
CY2019Q4	irdm	Ground Spares GroundSpares	225254000	USD
CY2020Q4	irdm	Other Construction In Process Net OtherConstructionInProcessNet	55235000	USD
CY2019Q4	irdm	Other Construction In Process Net OtherConstructionInProcessNet	47140000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2917076000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3180799000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3397000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	44444000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	38064000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	35225000	USD
CY2020Q4	irdm	Fixturesand Equipment Net FixturesandEquipmentNet	10388000	USD
CY2019Q4	irdm	Fixturesand Equipment Net FixturesandEquipmentNet	8983000	USD
CY2020Q4	irdm	Ground System Net GroundSystemNet	403000	USD
CY2019Q4	irdm	Ground System Net GroundSystemNet	93000	USD
CY2020Q4	irdm	Other Construction In Process Net OtherConstructionInProcessNet	55235000	USD
CY2019Q4	irdm	Other Construction In Process Net OtherConstructionInProcessNet	47140000	USD
CY2020	us-gaap	Depreciation Depreciation	301700000	USD
CY2019	us-gaap	Depreciation Depreciation	296100000	USD
CY2018	us-gaap	Depreciation Depreciation	216600000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	35225000	USD
CY2020Q4	irdm	Intangible Assets Excluding Goodwill Accumulated Amortization IntangibleAssetsExcludingGoodwillAccumulatedAmortization	12234000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	10279000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1548000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	57738000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	12234000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	45504000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	35225000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	35225000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	22441000	USD
CY2019Q4	irdm	Intangible Assets Excluding Goodwill Accumulated Amortization IntangibleAssetsExcludingGoodwillAccumulatedAmortization	10689000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	11752000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	57666000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	10689000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	46977000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1500000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1600000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1600000	USD
CY2019Q4	irdm	Credit Facility Carrying Amount CreditFacilityCarryingAmount	1423400000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1647900000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1548000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	10279000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23974000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1548000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	737000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	737000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	4161000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P10Y
CY2020	irdm	Lessee Operating Lease Termination Option LesseeOperatingLeaseTerminationOption	P1Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y8M12D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.067
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23974000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	27007000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	27007000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	23258000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3838000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	26859000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	27096000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	30256000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	5600000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	5100000	USD
CY2018	us-gaap	Operating Lease Expense OperatingLeaseExpense	5100000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	5700000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5145000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4974000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	4970000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	5088000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	8209000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	34086000	USD
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	21400000	USD
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	21600000	USD
CY2018	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	17100000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1468100000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Remainder Of Fiscal Year LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear	21445000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	21445000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	21445000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	21445000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	21445000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	98907000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	206132000	USD
CY2020	us-gaap	Debt Instrument Basis Spread On Variable Rate1 DebtInstrumentBasisSpreadOnVariableRate1	0.0375	Rate
CY2020Q4	irdm	Unamortized Deferred Financing Costs UnamortizedDeferredFinancingCosts	24000000.0	USD
CY2019Q4	irdm	Unamortized Deferred Financing Costs UnamortizedDeferredFinancingCosts	26600000	USD
CY2020Q4	irdm	Credit Facility Carrying Amount CreditFacilityCarryingAmount	1613600000	USD
CY2020Q4	irdm	Excess Cash Flow Prepayment ExcessCashFlowPrepayment	12600000	USD
CY2019Q4	us-gaap	Ratio Of Indebtedness To Net Capital1 RatioOfIndebtednessToNetCapital1	6.25
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	30944912	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	11883391	shares
CY2020	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.057	Rate
CY2020	us-gaap	Interest Costs Incurred InterestCostsIncurred	98600000	USD
CY2019	us-gaap	Interest Costs Incurred InterestCostsIncurred	140100000	USD
CY2018	us-gaap	Interest Costs Incurred InterestCostsIncurred	142700000	USD
CY2020	irdm	Total Debt Amortizationof Deferred Financing Costs TotalDebtAmortizationofDeferredFinancingCosts	3800000	USD
CY2019	irdm	Total Debt Amortizationof Deferred Financing Costs TotalDebtAmortizationofDeferredFinancingCosts	21600000	USD
CY2018	irdm	Total Debt Amortizationof Deferred Financing Costs TotalDebtAmortizationofDeferredFinancingCosts	26500000	USD
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	3200000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	15100000	USD
CY2020Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	200000	USD
CY2019Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	7800000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	16766000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	16500000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1555125000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1637625000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	100000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	16234000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	16500000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	16500000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	23966000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	16766000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	1596893000	USD
CY2020Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	1000000000.0	USD
CY2020	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	9100000	USD
CY2019	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	300000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	7000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	2500000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	18000	shares
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	2542664	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Purchase Price Of Common Stock Percent SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent	1
CY2020	irdm	Share Based Compensation Award Reductionin Shares Availablefor Issuanceby Shares Issued Pursuantto Any Stock Awardthatisnotan Appreciation Award ShareBasedCompensationAwardReductioninSharesAvailableforIssuancebySharesIssuedPursuanttoAnyStockAwardthatisnotanAppreciationAward	1.8	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.4078
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.3953
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y1M9D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y1M9D
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0259
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0268
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6856000	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.94
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	15.56
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1477000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.42
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	1000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	8.59
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	16614000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	39000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	9.97
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5703000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.29
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y4M17D
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	57956000	USD
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	21.12
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	1000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	11.80
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1670000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.11
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	29584000	USD
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	20.17
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	11.74
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4153000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.78
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y10D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	65887000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	5000	shares
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1581000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.14
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	33836000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	13000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	18.17
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2554000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.10
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y11M8D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	77182000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2330000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	8.31
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y7M2D
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	72266000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	2550000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	9.09
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P3Y11M4D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	77107000	USD
CY2020Q4	irdm	Total Authorized Preferred Stock Number TotalAuthorizedPreferredStockNumber	2000000.0	shares
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	1500000	shares
CY2020Q4	us-gaap	Preferred Stock Share Subscriptions PreferredStockShareSubscriptions	500000	shares
CY2021Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	300000000.0	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	41100000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	43000000.0	USD
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-89251000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-218391000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-22147000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	287000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	272000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1498000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-88964000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-218119000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-20649000	USD
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CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-3796000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	17000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	70000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	80000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	37000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-91000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1387000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1481000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1163000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	769000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-2278000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1089000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-27701000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-50690000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-9159000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-5869000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1850000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	904000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-109000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1302000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-99000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	Rate
CY2017	irdm	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Provisional Income Tax Benefit TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateProvisionalIncomeTaxBenefit	150900000	USD
CY2020	irdm	Deferred Income Tax Provision DeferredIncomeTaxProvision	-33679000	USD
CY2019	irdm	Deferred Income Tax Provision DeferredIncomeTaxProvision	-53842000	USD
CY2018	irdm	Deferred Income Tax Provision DeferredIncomeTaxProvision	-8354000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-32910000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-56120000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7265000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	Rate
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-18811000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-45790000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-4336000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-6723000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-15608000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-3361000	USD
CY2020	irdm	Income Tax Reconciliation Change In State Tax Valuation Allowance IncomeTaxReconciliationChangeInStateTaxValuationAllowance	2561000	USD
CY2019	irdm	Income Tax Reconciliation Change In State Tax Valuation Allowance IncomeTaxReconciliationChangeInStateTaxValuationAllowance	16216000	USD
CY2018	irdm	Income Tax Reconciliation Change In State Tax Valuation Allowance IncomeTaxReconciliationChangeInStateTaxValuationAllowance	10651000	USD
CY2020	irdm	Deferredimpactofstatetaxlawchangesandelections Deferredimpactofstatetaxlawchangesandelections	-1684000	USD
CY2019	irdm	Deferredimpactofstatetaxlawchangesandelections Deferredimpactofstatetaxlawchangesandelections	-2414000	USD
CY2018	irdm	Deferredimpactofstatetaxlawchangesandelections Deferredimpactofstatetaxlawchangesandelections	-6481000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-8451000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-8227000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-3807000	USD
CY2020	irdm	Effective Income Tax Rate Reconciliation Limitationon Executive Compensation EffectiveIncomeTaxRateReconciliationLimitationonExecutiveCompensation	960000	USD
CY2019	irdm	Effective Income Tax Rate Reconciliation Limitationon Executive Compensation EffectiveIncomeTaxRateReconciliationLimitationonExecutiveCompensation	792000	USD
CY2018	irdm	Effective Income Tax Rate Reconciliation Limitationon Executive Compensation EffectiveIncomeTaxRateReconciliationLimitationonExecutiveCompensation	1568000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	206000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	873000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	298000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1048000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	995000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	2872000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3180799000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	382392000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-967000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	1075000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-32910000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-56120000	USD
CY2020Q4	irdm	Deferred Tax Liabilities Fixed Assets And Intangibles DeferredTaxLiabilitiesFixedAssetsAndIntangibles	577955000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	446163000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7265000	USD
CY2019Q4	irdm	Deferred Tax Liabilities Fixed Assets And Intangibles DeferredTaxLiabilitiesFixedAssetsAndIntangibles	565897000	USD
CY2020Q4	irdm	Deferred Tax Assets Long Term Contracts DeferredTaxAssetsLongTermContracts	64738000	USD
CY2019Q4	irdm	Deferred Tax Assets Long Term Contracts DeferredTaxAssetsLongTermContracts	69188000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	430273000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	22493000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	24137000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	517504000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	475717000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	32218000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	29554000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	485286000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	633366000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	151155000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	187203000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	3900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	9500000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	52203000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	60374000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6283000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	7095000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	636441000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	155100000	USD
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	10000000.0	USD
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	5700000	USD
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	5200000	USD
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020Q4	irdm	Foreign Tax Credit Carry Forward Valuation Allowance Increase ForeignTaxCreditCarryForwardValuationAllowanceIncrease	1100000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	3600000	USD
CY2019	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	1800000	USD
CY2020	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	1800000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	500000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	1000000.0	USD
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	953000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1112000	USD
CY2020	irdm	Unrecognized Tax Benefits Increases Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromPriorPeriodTaxPositions	-416000	USD
CY2019	irdm	Unrecognized Tax Benefits Increases Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromPriorPeriodTaxPositions	38000	USD
CY2020	irdm	Unrecognized Tax Benefits Increases Resulting From Change Attributable To Final Assessment UnrecognizedTaxBenefitsIncreasesResultingFromChangeAttributableToFinalAssessment	0	USD
CY2019	irdm	Unrecognized Tax Benefits Increases Resulting From Change Attributable To Final Assessment UnrecognizedTaxBenefitsIncreasesResultingFromChangeAttributableToFinalAssessment	-176000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	21000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	537000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	953000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-56054000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-166193000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-23533000	USD
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	133491000	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	125167000	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	108975000	shares
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.42
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-1.33
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.22
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020Q4	us-gaap	Equity Method Investment Ownership Percentage EquityMethodInvestmentOwnershipPercentage	0.357
CY2020	irdm	No Single Customer Over10 Total Revenue Commercial NoSingleCustomerOver10TotalRevenueCommercial	0.10
CY2020	irdm	No Single Customer Over10 Total Revenue Government NoSingleCustomerOver10TotalRevenueGovernment	0.10
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2917076000	USD
CY2020	us-gaap	Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage	1
CY2020Q1	us-gaap	Revenues Revenues	145287000	USD
CY2019Q1	us-gaap	Revenues Revenues	133685000	USD
CY2020	us-gaap	Revenues Revenues	583439000	USD
CY2019	us-gaap	Revenues Revenues	560444000	USD
CY2018	us-gaap	Revenues Revenues	523008000	USD
CY2020	irdm	No Single Countryor Region Representing More Than Stated Percentageof Total Revenue NoSingleCountryorRegionRepresentingMoreThanStatedPercentageofTotalRevenue	0.10
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.05
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3100000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3100000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3000000.0	USD
CY2020Q2	us-gaap	Revenues Revenues	140173000	USD
CY2020Q3	us-gaap	Revenues Revenues	151472000	USD
CY2020Q4	us-gaap	Revenues Revenues	146507000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	11822000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	5828000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	12733000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	5100000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-31702000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-12422000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-4005000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-7925000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.24
CY2020Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.09
CY2020Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.03
CY2020Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.06
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.14
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-18024000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-18106000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-18012000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.82
CY2019Q2	us-gaap	Revenues Revenues	143100000	USD
CY2019Q3	us-gaap	Revenues Revenues	144785000	USD
CY2019Q4	us-gaap	Revenues Revenues	138874000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-1633000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	3741000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	8011000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	1000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-107857000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.18
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.16
CY2021Q1	irdm	Refinancing Costs RefinancingCosts	3400000	USD

Files In Submission

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$IRDM
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2020 Q4 Form 10-K Financial Statement

#000141881921000009 Filed on February 11, 2021

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$IRDM Iridium Communications Inc. Stock $irdm

2020 Q4 Form 10-K Financial Statement

#000141881921000009 Filed on February 11, 2021

Income Statement

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Facts In Submission

Files In Submission

$IRDM
Iridium Communications Inc. Stock $irdm