$INFN
Infinera Corp Stock $infn

$infn Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000113863921000026 Filed on March 03, 2021

Income Statement

Concept	2019 Q4	2019 Q3	2019 Q2
Revenue	$384.6M	$325.3M	$296.3M
YoY Change	15.81%	62.34%	42.27%
Cost Of Revenue	$273.2M	$238.5M	$235.0M
YoY Change	10.34%	83.14%	89.63%
Gross Profit	$111.4M	$86.83M	$61.26M
YoY Change	31.84%	23.73%	-27.34%
Gross Profit Margin	28.97%	26.69%	20.68%
Selling, General & Admin	$68.00M	$63.38M	$73.32M
YoY Change	-37.67%	54.75%	57.35%
% of Gross Profit	61.04%	72.99%	119.7%
Research & Development	$68.60M	$71.75M	$73.94M
YoY Change	-12.94%	41.63%	31.66%
% of Gross Profit	61.58%	82.63%	120.7%
Depreciation & Amortization	$28.60M	$29.10M	$31.20M
YoY Change	-43.03%	71.18%	91.41%
% of Gross Profit	25.67%	33.51%	50.93%
Operating Expenses	$172.3M	$156.1M	$169.6M
YoY Change	-13.31%	63.75%	60.15%
Operating Profit	-$60.87M	-$69.29M	-$108.4M
YoY Change	-46.71%	175.41%	401.34%
Interest Expense	-$8.900M	$7.868M	$7.280M
YoY Change	-25.21%	264.26%	191.08%
% of Operating Profit
Other Income/Expense, Net	-$5.886M	-$13.93M	-$3.887M
YoY Change	-69.39%	90.41%	777.43%
Pretax Income	-$66.76M	-$83.22M	-$112.3M
YoY Change	-49.98%	156.26%	408.89%
Income Tax	-$163.0K	$1.548M	$1.385M
% Of Pretax Income
Net Earnings	-$66.59M	-$84.77M	-$113.7M
YoY Change	-50.1%	159.94%	418.08%
Net Earnings / Revenue	-17.32%	-26.05%	-38.36%
Basic Earnings Per Share	-$0.37	-$0.47	-$0.64
Diluted Earnings Per Share	-$0.37	-$0.47	-$0.64
COMMON SHARES
Basic Shares Outstanding	180.8M shares	180.0M shares	178.7M shares
Diluted Shares Outstanding		180.0M shares	178.7M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2019 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$109.2M	$94.80M	$110.5M
YoY Change	-52.42%	-78.79%	-9.57%
Cash & Equivalents	$109.2M	$94.80M	$109.0M
Short-Term Investments	$0.00	$0.00	$1.500M
Other Short-Term Assets	$143.5M	$118.5M	$112.5M
YoY Change	45.54%	170.55%	144.03%
Inventory	$340.4M	$324.8M	$338.8M
Prepaid Expenses
Receivables	$349.6M	$284.4M	$260.4M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$942.8M	$822.6M	$822.2M
YoY Change	-1.49%	-3.96%	53.51%
LONG-TERM ASSETS
Property, Plant & Equipment	$150.8M	$156.6M	$159.2M
YoY Change	-56.01%	18.68%	16.41%
Goodwill	$249.8M	$234.5M	$229.3M
YoY Change	9.95%	29.56%	27.97%
Intangibles	$170.3M	$184.2M	$201.0M
YoY Change	-26.93%	178.46%	179.95%
Long-Term Investments
YoY Change
Other Assets	$27.18M	$13.38M	$10.82M
YoY Change	172.77%	21.51%	-1.9%
Total Long-Term Assets	$685.5M	$683.7M	$691.8M
YoY Change	-18.8%	74.89%	70.67%
TOTAL ASSETS
Total Short-Term Assets	$942.8M	$822.6M	$822.2M
Total Long-Term Assets	$685.5M	$683.7M	$691.8M
Total Assets	$1.628B	$1.506B	$1.514B
YoY Change	-9.6%	20.75%	60.9%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$273.4M	$206.6M	$194.9M
YoY Change	43.0%	148.22%	142.56%
Accrued Expenses	$193.2M	$160.7M	$158.6M
YoY Change	46.46%	271.03%	229.22%
Deferred Revenue	$103.8M	$72.87M	$78.42M
YoY Change	17.19%
Short-Term Debt	$31.67M	$6.939M	$3.720M
YoY Change
Long-Term Debt Due	$1.400M	$800.0K	$600.0K
YoY Change	-70.21%
Total Short-Term Liabilities	$715.3M	$558.3M	$532.4M
YoY Change	42.25%	155.52%	120.83%
LONG-TERM LIABILITIES
Long-Term Debt	$323.7M	$318.9M	$284.3M
YoY Change	21.26%	21.45%
Other Long-Term Liabilities	$69.19M	$72.13M	$62.82M
YoY Change	9.53%	407.36%	326.77%
Total Long-Term Liabilities	$392.9M	$391.0M	$347.1M
YoY Change	19.01%	41.28%	2258.09%
TOTAL LIABILITIES
Total Short-Term Liabilities	$715.3M	$558.3M	$532.4M
Total Long-Term Liabilities	$392.9M	$391.0M	$347.1M
Total Liabilities	$1.108B	$949.4M	$879.5M
YoY Change	33.04%	91.67%	243.8%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.320B	-$1.253B	-$1.169B
YoY Change	41.43%	52.19%	47.75%
Common Stock	$1.741B	$1.730B	$1.716B
YoY Change	3.26%	11.79%	18.31%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$386.5M	$426.7M	$515.1M
YoY Change
Total Liabilities & Shareholders Equity	$1.628B	$1.506B	$1.514B
YoY Change	-9.6%	20.75%	60.9%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2019 Q2
OPERATING ACTIVITIES
Net Income	-$66.59M	-$84.77M	-$113.7M
YoY Change	-50.1%	159.94%	418.08%
Depreciation, Depletion And Amortization	$28.60M	$29.10M	$31.20M
YoY Change	-43.03%	71.18%	91.41%
Cash From Operating Activities	-$10.20M	-$37.20M	-$63.80M
YoY Change	-85.75%	82.35%	-1011.43%
INVESTING ACTIVITIES
Capital Expenditures	-$1.900M	-$12.50M	-$9.200M
YoY Change	-82.24%	127.27%	-31.85%
Acquisitions
YoY Change
Other Investing Activities	-$800.0K	$2.300M	$15.60M
YoY Change	-99.19%	-92.58%	-78.03%
Cash From Investing Activities	-$2.600M	-$10.30M	$6.300M
YoY Change	-97.63%	-140.39%	-89.04%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	23.20M	32.80M	-400.0K
YoY Change	-1884.62%	-90.6%	-99.73%
NET CHANGE
Cash From Operating Activities	-10.20M	-37.20M	-63.80M
Cash From Investing Activities	-2.600M	-10.30M	6.300M
Cash From Financing Activities	23.20M	32.80M	-400.0K
Net Change In Cash	10.40M	-14.70M	-57.90M
YoY Change	-105.7%	-104.15%	-32.6%
FREE CASH FLOW
Cash From Operating Activities	-$10.20M	-$37.20M	-$63.80M
Capital Expenditures	-$1.900M	-$12.50M	-$9.200M
Free Cash Flow	-$8.300M	-$24.70M	-$54.60M
YoY Change	-86.37%	65.77%	-366.34%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	dei	Entity File Number EntityFileNumber	001-33486
CY2020	dei	Entity Registrant Name EntityRegistrantName	Infinera Corp
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0560433
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CY2018	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	29296000	USD
CY2020	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	13346000	USD
CY2019	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	42271000	USD
CY2018	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	15530000	USD
CY2020	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	24586000	USD
CY2019	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	40851000	USD
CY2018	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	12512000	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	563991000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	676153000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	506835000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-155199000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-350230000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-185679000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	118000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	1139000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	2428000	USD
CY2020	us-gaap	Interest Expense InterestExpense	46728000	USD
CY2019	us-gaap	Interest Expense InterestExpense	31657000	USD
CY2018	us-gaap	Interest Expense InterestExpense	22049000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1121000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2907000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1144000	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-9650000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-45489000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-33425000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-29271000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-200688000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-383655000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-214950000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6035000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2963000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-655000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-206723000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-386618000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-214295000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.10
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.16
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.36
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.10
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.16
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.36
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	188216000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	178984000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	157748000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	188216000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	178984000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	157748000	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-386618000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-214295000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	91000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	327000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	29040000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-9376000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-26483000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	85000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	6299000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	54000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	5313000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	22741000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-9339000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31554000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-183982000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-395957000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-245849000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	665365000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1701000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	15992000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	129628000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	42905000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	128726000	USD
CY2018	infn	Adjustments To Additional Paid In Capital Capped Call Transactions AdjustmentsToAdditionalPaidInCapitalCappedCallTransactions	48909000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31554000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-214295000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	703821000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	12052000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	425000	USD
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	43347000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-9339000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-386618000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	386535000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	92864000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3995000	USD
CY2020	us-gaap	Treasury Stock Retired Cost Method Amount TreasuryStockRetiredCostMethodAmount	2255000	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	15346000	USD
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2013000	USD
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	5000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	48642000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	67797000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	22741000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-206723000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	426284000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-206723000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-386618000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-214295000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	100140000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	119824000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	100494000	USD
CY2020	us-gaap	Restructuring Costs RestructuringCosts	5471000	USD
CY2019	us-gaap	Restructuring Costs RestructuringCosts	13937000	USD
CY2018	us-gaap	Restructuring Costs RestructuringCosts	7291000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	28115000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	19162000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	11161000	USD
CY2020	us-gaap	Accretion Expense AccretionExpense	0	USD
CY2019	us-gaap	Accretion Expense AccretionExpense	0	USD
CY2018	us-gaap	Accretion Expense AccretionExpense	4694000	USD
CY2020	infn	Operating Lease Expense Operating Activities OperatingLeaseExpenseOperatingActivities	18556000	USD
CY2019	infn	Operating Lease Expense Operating Activities OperatingLeaseExpenseOperatingActivities	31141000	USD
CY2018	infn	Operating Lease Expense Operating Activities OperatingLeaseExpenseOperatingActivities	0	USD
CY2020	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
CY2019	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
CY2018	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	5110000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	49461000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	43294000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	43410000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4438000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-178000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-254000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-32150000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	35395000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21111000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-71424000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	42840000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	8617000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	36127000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	93621000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	13458000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-93411000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	83272000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-520000	USD
CY2018	infn	Repayment Of Third Party Manufacturing Funding RepaymentOfThirdPartyManufacturingFunding	0	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-107704000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	54658000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-21490000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	21910000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	25658000	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	7994000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-112300000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-167350000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-99083000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	0	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	0	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2986000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1499000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	53039000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	25085000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	102112000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	10000000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	102899000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	0	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	1009000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	1050000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	39009000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	30202000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	37692000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-39009000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-12609000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	12624000	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	3380000	USD
CY2020	us-gaap	Proceeds From Other Equity ProceedsFromOtherEquity	92916000	USD
CY2019	us-gaap	Proceeds From Other Equity ProceedsFromOtherEquity	0	USD
CY2018	us-gaap	Proceeds From Other Equity ProceedsFromOtherEquity	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	8584000	USD
CY2018	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2020	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	24310000	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	55000000	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	48125000	USD
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
CY2020	infn	Payments For Capped Call Transactions PaymentsForCappedCallTransactions	0	USD
CY2019	infn	Payments For Capped Call Transactions PaymentsForCappedCallTransactions	0	USD
CY2018	infn	Payments For Capped Call Transactions PaymentsForCappedCallTransactions	48880000	USD
CY2020	infn	Repayment Of Third Party Manufacturing Funding RepaymentOfThirdPartyManufacturingFunding	5346000	USD
CY2019	infn	Repayment Of Third Party Manufacturing Funding RepaymentOfThirdPartyManufacturingFunding	0	USD
CY2020	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	8000000	USD
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	20000000	USD
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	233000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	300000	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2455000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	273000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2020	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2019	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2018	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	150000000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1587000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	163000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1211000	USD
CY2020	infn	Payment Of Term License Obligation PaymentOfTermLicenseObligation	5692000	USD
CY2019	infn	Payment Of Term License Obligation PaymentOfTermLicenseObligation	0	USD
CY2018	infn	Payment Of Term License Obligation PaymentOfTermLicenseObligation	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	17072000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	12053000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	17693000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2013000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	426000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1144000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	334162000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	71910000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	207889000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-267000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1491000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-579000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	182586000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-109540000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	120851000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	132797000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	242337000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	121486000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	315383000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	132797000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	242337000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5039000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16944000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6692000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	15638000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	9564000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	3554000	USD
CY2020	infn	Transfer Of Inventory To Fixed Assets TransferOfInventoryToFixedAssets	1083000	USD
CY2019	infn	Transfer Of Inventory To Fixed Assets TransferOfInventoryToFixedAssets	2961000	USD
CY2018	infn	Transfer Of Inventory To Fixed Assets TransferOfInventoryToFixedAssets	3787000	USD
CY2020	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	129628000	USD
CY2020	us-gaap	Loans Assumed1 LoansAssumed1	0	USD
CY2019	us-gaap	Loans Assumed1 LoansAssumed1	6960000	USD
CY2018	us-gaap	Loans Assumed1 LoansAssumed1	0	USD
CY2020	infn	Unpaid Debt Issuancecosts UnpaidDebtIssuancecosts	0	USD
CY2019	infn	Unpaid Debt Issuancecosts UnpaidDebtIssuancecosts	2493000	USD
CY2018	infn	Unpaid Debt Issuancecosts UnpaidDebtIssuancecosts	0	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	0	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3838000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2774000	USD
CY2020	infn	Term Licenses Incurred But Not Yet Paid TermLicensesIncurredButNotYetPaid	12478000	USD
CY2019	infn	Term Licenses Incurred But Not Yet Paid TermLicensesIncurredButNotYetPaid	0	USD
CY2018	infn	Term Licenses Incurred But Not Yet Paid TermLicensesIncurredButNotYetPaid	0	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	298014000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	109201000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	202954000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	3293000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	4339000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	13229000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	14076000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	19257000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	26154000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	315383000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	132797000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	242337000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%"> The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates, assumptions and judgments that can affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the consolidated financial statements, as well as the reported amounts of revenue and expenses during the reporting periods. Such management estimates include, but not limited to the revenue recognition, stock-based compensation, employee benefit and pension plans</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">,</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%"> inventory valuation, accrued warranty, operating liabilities, business combinations, fair value measurement of investments and accounting for income taxes. Other estimates, assumptions and judgments made by management include restructuring and other related costs, manufacturing partner and supplier liabilities, allowances for sales returns, allowances for doubtful accounts, pension benefit cost and obligations, useful life of acquired intangibles and recoverability of property, plant and equipment, impairment loss related to facility abandonment, fair value measurement of the debt component of the convertible senior notes, and loss contingencies. The Company bases its assumptions on historical experience and also on assumptions that it believes are reasonable. Actual results could differ materially from those estimates. Further, the Company expects uncertainties around its key accounting estimates to continue to evolve depending on the duration and degree of impact associated with the recent outbreak of a novel strain of the coronavirus </span></div>(“COVID-19”). These estimates may change as new events occur and additional information emerges, and such changes are recognized or disclosed in the Company's consolidated financial statements.
CY2020	infn	Contract With Customer Contractual Support Period ContractWithCustomerContractualSupportPeriod	P1Y
CY2020	infn	Sharebased Compensation Arrangement By Sharebased Payment Award Stock Plan Offering Period SharebasedCompensationArrangementBySharebasedPaymentAwardStockPlanOfferingPeriod	P6M
CY2020	infn	Annual Expected Cash Dividend Yield AnnualExpectedCashDividendYield	0
CY2020	us-gaap	Advertising Expense AdvertisingExpense	1300000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	1500000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	900000	USD
CY2020	infn	Foreign Currency Transaction Gain Loss ForeignCurrencyTransactionGainLoss	-200000	USD
CY2019	infn	Foreign Currency Transaction Gain Loss ForeignCurrencyTransactionGainLoss	-3700000	USD
CY2018	infn	Foreign Currency Transaction Gain Loss ForeignCurrencyTransactionGainLoss	-2500000	USD
CY2020Q4	infn	Reserve For Sales Returns ReserveForSalesReturns	2400000	USD
CY2019Q4	infn	Reserve For Sales Returns ReserveForSalesReturns	3500000	USD
CY2018Q4	infn	Reserve For Sales Returns ReserveForSalesReturns	4300000	USD
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-style:italic;font-weight:700;line-height:120%">Concentration of Risk</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%"> Financial instruments that are potentially subject to concentrations of credit risk consist primarily of cash and cash equivalents, restricted cash and accounts receivable. </span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%"> The risk with respect to accounts receivable is mitigated by ongoing credit evaluations that the Company performs on its customers. As the Company continues to expand its sales internationally, it may experience increased levels of customer credit risk associated with those regions. Collateral is generally not required for accounts receivable but may be used in the future to mitigate credit risk associated with customers located in certain geographical regions.</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%"> As of December 26, 2020, no customer accounted for over 10% of the Company's net accounts receivable balance. As of December 28, 2019, one customer accounted for over 10% of the Company's net accounts receivable balance.</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%"> To date, a few of the Company’s customers have accounted for a significant portion of its revenue. One customer accounted for approximately 11%, 13% and 13% of the Company's revenue in each of 2020, 2019 and 2018, respectively. One other customer accounted for approximately 15% of the Company's revenue in 2018. No other customers accounted for over 10% of the Company's revenue in 2020, 2019 or 2018.</span></div><div style="margin-top:5pt;text-indent:36pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">The Company depends on sole source or limited source suppliers for several key components and raw materials. The Company generally purchases these sole source or limited source components and raw materials through standard purchase orders and does not have long-term contracts with many of these limited-source suppliers. While the Company seeks to maintain sufficient reserve stock of such components and raw materials, the Company’s business and results of operations could be adversely affected if any of its sole source or limited source suppliers suffer from capacity constraints, lower than expected yields, deployment delays, work stoppages or any other reduction or disruption in output.</span></div>
CY2020	infn	Software Warranty Period SoftwareWarrantyPeriod	P90D
CY2020Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P6Y
CY2020	infn	Restructuringand Related Costs Term RestructuringandRelatedCostsTerm	P4Y
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	34000000.0	USD
CY2020	us-gaap	Business Exit Costs1 BusinessExitCosts1	9900000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	41500000	USD
CY2019	infn	Operating Lease Accelerated Rent Expense OperatingLeaseAcceleratedRentExpense	15900000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	14900000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	76100000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	18100000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	64200000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	22866000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	20972000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	17400000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	15244000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	14238000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	31178000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	121898000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	30887000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	91011000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y7M17D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0918
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	26565000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	18023000	USD
CY2020	infn	Finance Lease Cost FinanceLeaseCost	900000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	700000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	200000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1100000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	1400000	USD
CY2019	infn	Finance Lease Cost FinanceLeaseCost	500000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	400000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	100000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1400000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	2400000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	1253000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	1253000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	984000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	984000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	446000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	446000	USD
CY2020Q4	infn	Finance Lease Liability To Be Paid After Year Three FinanceLeaseLiabilityToBePaidAfterYearThree	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2683000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	161000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	2522000	USD
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y2M4D
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0640
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1588000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	0	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	200000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1355596000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1298865000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	943379000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1355596000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1298865000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	943379000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1355596000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1298865000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	943379000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	319428000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	349645000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	51583000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	22814000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	163056000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	139820000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	85200000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	119900000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	470210000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	33507000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	20959000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	7111000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1740000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1584000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	535111000	USD
CY2020	us-gaap	Business Exit Costs1 BusinessExitCosts1	9900000	USD
CY2019	us-gaap	Business Exit Costs1 BusinessExitCosts1	15900000	USD
CY2020Q4	us-gaap	Cash Cash	298000000.0	USD
CY2019Q4	us-gaap	Cash Cash	109200000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	900000	USD
CY2019Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	900000	USD
CY2020	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	300000	USD
CY2019	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	500000	USD
CY2018	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	700000	USD
CY2019	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	30900000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	249848000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	23578000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	273426000	USD
CY2020Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	0	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	355383000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	230501000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	124882000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	336535000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	166189000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	170346000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	47800000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	59900000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	124882000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	36155000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	33560000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	27390000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	11983000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	9025000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	6769000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4005000	USD
CY2020	infn	Accounts Receivable Allowancefor Credit Loss Additions AccountsReceivableAllowanceforCreditLossAdditions	1621000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	3231000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	284000	USD
CY2020	infn	Allowance For Doubtful Accounts Receivable Others AllowanceForDoubtfulAccountsReceivableOthers	151000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2912000	USD
CY2020Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	34693000	USD
CY2019Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	47474000	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	55835000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	48842000	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	178779000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	244113000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	269307000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	340429000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	534389000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	489998000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	381256000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	339205000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	153133000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	150793000	USD
CY2020Q4	infn	Loss Contingency Related To Non Cancelable Purchase Commitments LossContingencyRelatedToNonCancelablePurchaseCommitments	18848000	USD
CY2019Q4	infn	Loss Contingency Related To Non Cancelable Purchase Commitments LossContingencyRelatedToNonCancelablePurchaseCommitments	25410000	USD
CY2020Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	45884000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	65815000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	9292000	USD
CY2019Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	26706000	USD
CY2020Q4	infn	Lessee Leases Current LesseeLeasesCurrent	16023000	USD
CY2019Q4	infn	Lessee Leases Current LesseeLeasesCurrent	19486000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	60503000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	55751000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	150550000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	193168000	USD
CY2020	us-gaap	Depreciation Depreciation	52300000	USD
CY2019	us-gaap	Depreciation Depreciation	60000000.0	USD
CY2018	us-gaap	Depreciation Depreciation	47700000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	24351000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	70786000	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	51797000	USD
CY2019	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	13937000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	29403000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	28732000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	42195000	USD
CY2020	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	5469000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	10471000	USD
CY2018	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-31788000	USD
CY2018	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-234000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31554000	USD
CY2019	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-10977000	USD
CY2019	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-1638000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-9339000	USD
CY2020	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	20857000	USD
CY2020	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-1884000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	22741000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-386618000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-214295000	USD
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	188216000	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	178984000	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	157748000	shares
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-1.10
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-2.16
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-1.36
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	18199000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	15607000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11150000	shares
CY2020Q4	us-gaap	Share Price SharePrice	10.97
CY2020	us-gaap	Debt Instrument Convertible If Converted Value In Excess Of Principal DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal	86500000	USD
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	77000000.0	USD
CY2020Q4	us-gaap	Share Price SharePrice	10.97
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	5000000.0	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4700000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	5000000.0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	22866000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	20972000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	17400000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	15244000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	14238000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	31178000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	121898000	USD
CY2020Q4	infn	Number Of Finance Leases NumberOfFinanceLeases	2	lease
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	1253000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	1253000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	984000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	984000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	446000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	446000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2683000	USD
CY2020Q4	us-gaap	Purchase Obligation PurchaseObligation	291400000	USD
CY2019Q4	us-gaap	Purchase Obligation PurchaseObligation	258200000	USD
CY2018Q4	us-gaap	Purchase Obligation PurchaseObligation	203500000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	274236000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	11110000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	5731000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	288000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	0	USD
CY2020Q4	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	0	USD
CY2020Q4	us-gaap	Purchase Obligation PurchaseObligation	291365000	USD
CY2020Q4	infn	Liability For Uncertain Tax Positions LiabilityForUncertainTaxPositions	18500000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	43348000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	41021000	USD
CY2020	us-gaap	Product Warranty Expense ProductWarrantyExpense	23973000	USD
CY2019	us-gaap	Product Warranty Expense ProductWarrantyExpense	23874000	USD
CY2020	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	31462000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	25070000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	4849000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	3523000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	40708000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	43348000	USD
CY2020Q3	us-gaap	Product Warranty Expense ProductWarrantyExpense	5000000.0	USD
CY2020Q4	infn	Outstanding Standby Letters Of Credit OutstandingStandbyLettersOfCredit	28900000	USD
CY2020Q4	infn	Bond Secure Amount BondSecureAmount	2800000	USD
CY2019Q4	infn	Outstanding Standby Letters Of Credit OutstandingStandbyLettersOfCredit	27900000	USD
CY2020Q4	infn	Shares Subject To Options And Restricted Stock Or Rsu Awards SharesSubjectToOptionsAndRestrictedStockOrRsuAwards	15986000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	9582000	shares
CY2020Q4	infn	Shares Of Common Stock Reserved For Future Issuance Under Espp SharesOfCommonStockReservedForFutureIssuanceUnderEspp	9437000	shares
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	35005000	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1397000	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.11
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	229000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	7.43
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	496000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	53000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	11.57
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1115000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.09
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	0	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	385000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	7.47
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P0Y6M
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	730000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.41
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	474000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.43
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	155000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	205000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	8.58
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	51000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.57
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	174000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	51000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	7.57
CY2020Q4	us-gaap	Share Price SharePrice	10.97
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P0Y6M
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P0Y6M
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	3046000	USD
CY2020	infn	Amortization Of Stock Based Compensation AmortizationOfStockBasedCompensation	36100000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	8637000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10438000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10229000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	49461000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	42779000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	43409000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	494000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	917000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	288000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	186000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	9606000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.010
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6832000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	11017000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3334000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7018000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	369000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-546000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-4982000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-740000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-7127000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4982000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-371000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7673000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6035000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2963000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-655000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-37300000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-202200000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-135500000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.004
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.001
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.001
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.012
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.018
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.012
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.020
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.008
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.169
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.197
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.181
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.063
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.002
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.029
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.008
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.030
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.008
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.003
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6000000.0	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.030
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3000000.0	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-700000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.008
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.003
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	354598000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	301929000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	126839000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	121065000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	61871000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	72094000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	32444000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	31982000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	5819000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	4601000	USD
CY2020Q4	infn	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	24261000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	25417000	USD
CY2019Q4	infn	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	19265000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4161000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3998000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	609993000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	554934000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	531923000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	484834000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	78070000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	70100000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	830000	USD
CY2020Q4	infn	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	17515000	USD
CY2019Q4	infn	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	16261000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	24547000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	34542000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	37979000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	625000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	80041000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	77050000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1971000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6950000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	44092000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24617000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	19786000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3213000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1965000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2296000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	11494000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	18212000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2981000	USD
CY2020	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	-258000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	542000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	40000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	243000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	160000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	406000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	57931000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	44092000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24617000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	57900000	USD
CY2020	infn	Offset To Deferred Tax Assets For Unrecognized Tax Benefits OffsetToDeferredTaxAssetsForUnrecognizedTaxBenefits	40200000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	20600000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	2900000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1400000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1200000	USD
CY2020Q4	infn	Unrecognized Tax Benefits Net UnrecognizedTaxBenefitsNet	500000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	153133000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	150793000	USD
CY2020	us-gaap	Other Postretirement Benefit Expense OtherPostretirementBenefitExpense	3500000	USD
CY2019	us-gaap	Other Postretirement Benefit Expense OtherPostretirementBenefitExpense	3900000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	113234000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	104624000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	896000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2061000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1773000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2075000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	3103000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1925000	USD
CY2019	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	0	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-6243000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-9134000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Contributions By Plan Participant DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant	986000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Contributions By Plan Participant DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant	0	USD
CY2020	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-10165000	USD
CY2019	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	2735000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	129936000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	113234000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	69777000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	63064000	USD
CY2020	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	447000	USD
CY2019	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	9043000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	0	USD
CY2019	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	1397000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Contributions By Plan Participant DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant	1305000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	113234000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-52375000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Assets Contributions By Plan Participant DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant	715000	USD
CY2020	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0	USD
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	53000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Foreign Currency Translation Gain Loss DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss	6032000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Assets Foreign Currency Translation Gain Loss DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss	-1701000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	77561000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	69777000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	52375000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	43457000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	128900000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	110800000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	77561000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	69777000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	129936000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-43457000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	896000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2061000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	466000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1773000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2075000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	512000	USD
CY2020	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	2644000	USD
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	2371000	USD
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	653000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1884000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1638000	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-234000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	1909000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3403000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	559000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	5367000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	5313000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-8183000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-1680000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-1884000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-1638000	USD
CY2020	infn	Other Comprehensive Income Loss Defined Benefit Plan Foreign Currency Translation Gain Loss Reclassification Adjustment From Aoci Before Tax OtherComprehensiveIncomeLossDefinedBenefitPlanForeignCurrencyTranslationGainLossReclassificationAdjustmentFromAOCIBeforeTax	0	USD
CY2019	infn	Other Comprehensive Income Loss Defined Benefit Plan Foreign Currency Translation Gain Loss Reclassification Adjustment From Aoci Before Tax OtherComprehensiveIncomeLossDefinedBenefitPlanForeignCurrencyTranslationGainLossReclassificationAdjustmentFromAOCIBeforeTax	-12000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	11666000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	5367000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear	-3500000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0105
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0135
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0225
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0225
CY2020Q4	infn	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Pension Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfPensionIncrease	0.0200
CY2019Q4	infn	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Pension Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfPensionIncrease	0.0200
CY2020Q4	infn	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Return On Plan Assets DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermReturnOnPlanAssets	0.0393
CY2019Q4	infn	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Return On Plan Assets DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermReturnOnPlanAssets	0.0393
CY2020	infn	Defined Pension Plan Average Life Expectancy During Retirement Retiring At End Of Period DefinedPensionPlanAverageLifeExpectancyDuringRetirementRetiringAtEndOfPeriod	P20Y6M
CY2020	infn	Defined Pension Plan Average Life Expectancy During Retirement Male DefinedPensionPlanAverageLifeExpectancyDuringRetirementMale	P20Y
CY2020	infn	Defined Pension Plan Average Life Expectancy During Retirement Female DefinedPensionPlanAverageLifeExpectancyDuringRetirementFemale	P23Y7M6D
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	77561000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	384567000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	69777000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	5100000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	5121000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	4333000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	3872000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	4302000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	6003000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	22904000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	353525000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	340211000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	331587000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	330273000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	325341000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	296250000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	292707000	USD
CY2020Q4	infn	Amortization Of Intangible Assets Cost Of Revenue AmortizationOfIntangibleAssetsCostOfRevenue	4611000	USD
CY2020Q3	infn	Amortization Of Intangible Assets Cost Of Revenue AmortizationOfIntangibleAssetsCostOfRevenue	7287000	USD
CY2020Q2	infn	Amortization Of Intangible Assets Cost Of Revenue AmortizationOfIntangibleAssetsCostOfRevenue	8721000	USD
CY2020Q1	infn	Amortization Of Intangible Assets Cost Of Revenue AmortizationOfIntangibleAssetsCostOfRevenue	8628000	USD
CY2019Q4	infn	Amortization Of Intangible Assets Cost Of Revenue AmortizationOfIntangibleAssetsCostOfRevenue	8437000	USD
CY2019Q3	infn	Amortization Of Intangible Assets Cost Of Revenue AmortizationOfIntangibleAssetsCostOfRevenue	7796000	USD
CY2019Q2	infn	Amortization Of Intangible Assets Cost Of Revenue AmortizationOfIntangibleAssetsCostOfRevenue	8098000	USD
CY2019Q1	infn	Amortization Of Intangible Assets Cost Of Revenue AmortizationOfIntangibleAssetsCostOfRevenue	8252000	USD
CY2020Q4	infn	Business Combination Acquisition And Integration Related Costs Cost Of Revenue BusinessCombinationAcquisitionAndIntegrationRelatedCostsCostOfRevenue	0	USD
CY2020Q3	infn	Business Combination Acquisition And Integration Related Costs Cost Of Revenue BusinessCombinationAcquisitionAndIntegrationRelatedCostsCostOfRevenue	43000	USD
CY2020Q2	infn	Business Combination Acquisition And Integration Related Costs Cost Of Revenue BusinessCombinationAcquisitionAndIntegrationRelatedCostsCostOfRevenue	750000	USD
CY2020Q1	infn	Business Combination Acquisition And Integration Related Costs Cost Of Revenue BusinessCombinationAcquisitionAndIntegrationRelatedCostsCostOfRevenue	1035000	USD
CY2019Q4	infn	Business Combination Acquisition And Integration Related Costs Cost Of Revenue BusinessCombinationAcquisitionAndIntegrationRelatedCostsCostOfRevenue	7238000	USD
CY2019Q3	infn	Business Combination Acquisition And Integration Related Costs Cost Of Revenue BusinessCombinationAcquisitionAndIntegrationRelatedCostsCostOfRevenue	8447000	USD
CY2019Q2	infn	Business Combination Acquisition And Integration Related Costs Cost Of Revenue BusinessCombinationAcquisitionAndIntegrationRelatedCostsCostOfRevenue	10700000	USD
CY2019Q1	infn	Business Combination Acquisition And Integration Related Costs Cost Of Revenue BusinessCombinationAcquisitionAndIntegrationRelatedCostsCostOfRevenue	2064000	USD
CY2020Q4	infn	Restructuring Charges Costof Revenue RestructuringChargesCostofRevenue	-106000	USD
CY2020Q3	infn	Restructuring Charges Costof Revenue RestructuringChargesCostofRevenue	1504000	USD
CY2020Q2	infn	Restructuring Charges Costof Revenue RestructuringChargesCostofRevenue	1591000	USD
CY2020Q1	infn	Restructuring Charges Costof Revenue RestructuringChargesCostofRevenue	1157000	USD
CY2019Q4	infn	Restructuring Charges Costof Revenue RestructuringChargesCostofRevenue	5407000	USD
CY2019Q3	infn	Restructuring Charges Costof Revenue RestructuringChargesCostofRevenue	1198000	USD
CY2019Q2	infn	Restructuring Charges Costof Revenue RestructuringChargesCostofRevenue	1864000	USD
CY2019Q1	infn	Restructuring Charges Costof Revenue RestructuringChargesCostofRevenue	21466000	USD
CY2020Q4	us-gaap	Cost Of Revenue CostOfRevenue	227382000	USD
CY2020Q3	us-gaap	Cost Of Revenue CostOfRevenue	231935000	USD
CY2020Q2	us-gaap	Cost Of Revenue CostOfRevenue	234180000	USD
CY2020Q1	us-gaap	Cost Of Revenue CostOfRevenue	253307000	USD
CY2019Q4	us-gaap	Cost Of Revenue CostOfRevenue	273161000	USD
CY2019Q3	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	2168000	USD
CY2019Q2	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	3471000	USD
CY2019Q3	us-gaap	Cost Of Revenue CostOfRevenue	238512000	USD
CY2019Q2	us-gaap	Cost Of Revenue CostOfRevenue	234994000	USD
CY2019Q1	us-gaap	Cost Of Revenue CostOfRevenue	226275000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	126143000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	108276000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	97407000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	76966000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	111406000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	86829000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	61256000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	66432000	USD
CY2020Q4	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	4745000	USD
CY2020Q3	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	4696000	USD
CY2020Q2	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	4585000	USD
CY2020Q1	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	4555000	USD
CY2019Q4	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	6617000	USD
CY2019Q3	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	6861000	USD
CY2019Q2	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	6745000	USD
CY2019Q1	infn	Amortization Of Intangible Assets Operating Expenses AmortizationOfIntangibleAssetsOperatingExpenses	7057000	USD
CY2020Q4	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	-265000	USD
CY2020Q3	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	1045000	USD
CY2020Q2	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	3344000	USD
CY2020Q1	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	9222000	USD
CY2019Q4	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	11011000	USD
CY2019Q3	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	11962000	USD
CY2019Q2	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	12164000	USD
CY2019Q1	infn	Business Combination Acquisition And Integration Related Costs BusinessCombinationAcquisitionAndIntegrationRelatedCosts	7134000	USD
CY2020Q4	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	7230000	USD
CY2020Q3	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	6679000	USD
CY2020Q2	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	5097000	USD
CY2020Q1	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	5580000	USD
CY2019Q4	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	18024000	USD
CY2019Q1	infn	Restructuring Charges Operating Expenses RestructuringChargesOperatingExpenses	17188000	USD
CY2020Q4	us-gaap	Other Expenses OtherExpenses	121209000	USD
CY2020Q3	us-gaap	Other Expenses OtherExpenses	122773000	USD
CY2020Q2	us-gaap	Other Expenses OtherExpenses	129007000	USD
CY2020Q1	us-gaap	Other Expenses OtherExpenses	134489000	USD
CY2019Q4	us-gaap	Other Expenses OtherExpenses	136625000	USD
CY2019Q3	us-gaap	Other Expenses OtherExpenses	135125000	USD
CY2019Q2	us-gaap	Other Expenses OtherExpenses	147260000	USD
CY2019Q1	us-gaap	Other Expenses OtherExpenses	146741000	USD
CY2020Q4	us-gaap	Operating Expenses OperatingExpenses	132919000	USD
CY2020Q3	us-gaap	Operating Expenses OperatingExpenses	135193000	USD
CY2020Q2	us-gaap	Operating Expenses OperatingExpenses	142033000	USD
CY2020Q1	us-gaap	Operating Expenses OperatingExpenses	153846000	USD
CY2019Q4	us-gaap	Operating Expenses OperatingExpenses	172277000	USD
CY2019Q3	us-gaap	Operating Expenses OperatingExpenses	156116000	USD
CY2019Q2	us-gaap	Operating Expenses OperatingExpenses	169640000	USD
CY2019Q1	us-gaap	Operating Expenses OperatingExpenses	178120000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-6776000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-26917000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-44626000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-76880000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-60871000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-69287000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-108384000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-111688000	USD
CY2020Q4	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-2043000	USD
CY2020Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7620000	USD
CY2020Q2	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-14374000	USD
CY2020Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-21452000	USD
CY2019Q4	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-5886000	USD
CY2019Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-13932000	USD
CY2019Q2	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-3887000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-34537000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-59000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-98332000	USD
CY2019Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-9720000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-8819000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-66757000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-83219000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-112271000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-121408000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1105000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1359000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2635000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	936000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-163000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1548000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1385000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	193000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-9924000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-35896000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-61635000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-99268000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-66594000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-84767000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-113656000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-121601000	USD
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.05
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.19
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.33
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.55
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.37
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.47
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.64
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.69
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.05
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.19
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.33
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.55
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.37
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.47
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.64
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.69

Files In Submission

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0001138639-21-000026-index.html	Edgar Link	pending
0001138639-21-000026.txt	Edgar Link	pending
0001138639-21-000026-xbrl.zip	Edgar Link	pending
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$INFN
Infinera Corp Stock $infn

2019 Q4 Form 10-K Financial Statement

#000113863921000026 Filed on March 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INFN Infinera Corp Stock $infn

2019 Q4 Form 10-K Financial Statement

#000113863921000026 Filed on March 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INFN
Infinera Corp Stock $infn