$ADTN
ADTRAN Holdings, Inc. Stock $adtn

$adtn Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000119312513082523 Filed on February 28, 2013

Income Statement

Concept	2011 Q4	2011 Q3	2011 Q2
Revenue	$175.3M	$192.2M	$184.2M
YoY Change	6.04%	17.91%	22.49%
Cost Of Revenue	$76.00M	$82.72M	$77.40M
YoY Change	11.11%	25.9%	26.89%
Gross Profit	$99.22M	$109.5M	$106.8M
YoY Change	2.39%	12.51%	19.63%
Gross Profit Margin	56.6%	56.96%	57.99%
Selling, General & Admin	$31.80M	$31.48M	$30.90M
YoY Change	7.43%	6.69%	8.42%
% of Gross Profit	32.05%	28.75%	28.93%
Research & Development	$24.90M	$26.89M	$24.60M
YoY Change	10.67%	17.96%	10.31%
% of Gross Profit	25.1%	24.57%	23.03%
Depreciation & Amortization	$3.100M	$2.900M	$2.800M
YoY Change	14.81%	11.54%	7.69%
% of Gross Profit	3.12%	2.65%	2.62%
Operating Expenses	$56.70M	$58.37M	$55.50M
YoY Change	8.83%	11.82%	9.47%
Operating Profit	$41.12M	$51.11M	$51.31M
YoY Change	-8.23%	13.32%	32.93%
Interest Expense	$4.500M	$599.0K	$4.800M
YoY Change	9.76%	-86.39%	37.14%
% of Operating Profit	10.94%	1.17%	9.35%
Other Income/Expense, Net	-$300.0K	-$155.0K	-$100.0K
YoY Change	50.0%	-48.33%	-50.0%
Pretax Income	$45.40M	$55.37M	$56.00M
YoY Change	-6.97%	12.54%	33.33%
Income Tax	$14.20M	$19.16M	$19.00M
% Of Pretax Income	31.28%	34.6%	33.93%
Net Earnings	$31.16M	$36.21M	$36.94M
YoY Change	-13.44%	12.81%	32.89%
Net Earnings / Revenue	17.78%	18.84%	20.05%
Basic Earnings Per Share	$0.49	$0.57	$0.57
Diluted Earnings Per Share	$0.48	$0.56	$0.56
COMMON SHARES
Basic Shares Outstanding		64.02M shares	64.69M shares
Diluted Shares Outstanding		64.96M shares

Balance Sheet

Concept	2011 Q4	2011 Q3	2011 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$202.3M	$153.9M	$162.5M
YoY Change	6.92%	-15.86%	-9.67%
Cash & Equivalents	$42.98M	$32.53M	$23.80M
Short-Term Investments	$159.3M	$121.4M	$138.7M
Other Short-Term Assets	$15.20M	$15.50M	$15.60M
YoY Change	9.35%	13.97%	22.83%
Inventory	$87.80M	$87.30M	$86.70M
Prepaid Expenses	$3.119M
Receivables	$76.13M	$89.60M	$83.30M
Other Receivables	$9.800M	$12.50M	$11.20M
Total Short-Term Assets	$391.2M	$358.9M	$359.2M
YoY Change	10.24%	4.57%	6.84%
LONG-TERM ASSETS
Property, Plant & Equipment	$75.30M	$75.70M	$75.00M
YoY Change	1.75%	2.16%	1.35%
Goodwill	$3.492M
YoY Change
Intangibles
YoY Change
Long-Term Investments	$332.0M	$348.1M	$372.4M
YoY Change	27.11%	46.02%	77.0%
Other Assets	$7.131M	$14.10M	$1.800M
YoY Change	275.32%	605.0%	-14.29%
Total Long-Term Assets	$426.3M	$442.4M	$449.2M
YoY Change	26.45%	40.67%	56.79%
TOTAL ASSETS
Total Short-Term Assets	$391.2M	$358.9M	$359.2M
Total Long-Term Assets	$426.3M	$442.4M	$449.2M
Total Assets	$817.5M	$801.3M	$808.4M
YoY Change	18.14%	21.83%	29.82%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$29.40M	$33.20M	$38.50M
YoY Change	28.96%	22.96%	-13.09%
Accrued Expenses	$5.876M	$21.50M	$16.50M
YoY Change	-65.44%	13.76%	-7.82%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$61.93M	$75.20M	$64.30M
YoY Change	23.86%	34.53%	-12.99%
LONG-TERM LIABILITIES
Long-Term Debt	$46.50M	$46.50M	$46.50M
YoY Change	-2.11%	-2.72%	-2.72%
Other Long-Term Liabilities	$12.08M	$14.90M	$15.10M
YoY Change	2.35%	36.7%	43.81%
Total Long-Term Liabilities	$58.58M	$61.40M	$61.60M
YoY Change	-1.22%	4.6%	5.66%
TOTAL LIABILITIES
Total Short-Term Liabilities	$61.93M	$75.20M	$64.30M
Total Long-Term Liabilities	$58.58M	$61.40M	$61.60M
Total Liabilities	$125.4M	$136.6M	$134.7M
YoY Change	4.75%	12.8%	-0.22%
SHAREHOLDERS EQUITY
Retained Earnings	$840.2M
YoY Change
Common Stock	$214.4M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$375.5M
YoY Change
Treasury Stock Shares	15.95M shares
Shareholders Equity	$692.1M	$664.7M	$673.7M
YoY Change
Total Liabilities & Shareholders Equity	$817.5M	$801.3M	$808.4M
YoY Change	18.14%	21.83%	29.82%

Cashflow Statement

Concept	2011 Q4	2011 Q3	2011 Q2
OPERATING ACTIVITIES
Net Income	$31.16M	$36.21M	$36.94M
YoY Change	-13.44%	12.81%	32.89%
Depreciation, Depletion And Amortization	$3.100M	$2.900M	$2.800M
YoY Change	14.81%	11.54%	7.69%
Cash From Operating Activities	$41.80M	$43.10M	$29.20M
YoY Change	40.27%	207.86%	32.73%
INVESTING ACTIVITIES
Capital Expenditures	-$2.400M	-$3.200M	-$3.300M
YoY Change	-4.0%	23.08%	32.0%
Acquisitions
YoY Change
Other Investing Activities	-$23.30M	$10.70M	-$35.60M
YoY Change	68.84%	-141.96%	111.9%
Cash From Investing Activities	-$25.70M	$7.400M	-$38.90M
YoY Change	57.67%	-126.33%	101.55%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-6.600M	-40.20M	-4.300M
YoY Change	-20.48%	-541.76%	-714.29%
NET CHANGE
Cash From Operating Activities	41.80M	43.10M	29.20M
Cash From Investing Activities	-25.70M	7.400M	-38.90M
Cash From Financing Activities	-6.600M	-40.20M	-4.300M
Net Change In Cash	9.500M	10.30M	-14.00M
YoY Change	82.69%	-306.0%	-511.76%
FREE CASH FLOW
Cash From Operating Activities	$41.80M	$43.10M	$29.20M
Capital Expenditures	-$2.400M	-$3.200M	-$3.300M
Free Cash Flow	$44.20M	$46.30M	$32.50M
YoY Change	36.84%	178.92%	32.65%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	4569000
CY2012Q4	us-gaap	Deferred Revenue DeferredRevenue	61854000
CY2012Q4	us-gaap	Short Term Investments ShortTermInvestments	160481000
CY2012Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	20915000
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	23316000
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	5546000
CY2012Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1839000
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	24.82
CY2012Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	21181000
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	81194000
CY2012Q4	us-gaap	Inventory Net InventoryNet	102583000
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2284000
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6000
CY2012Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	52267000
CY2012Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2	38000
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6028000	shares
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	277965000
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	36404000
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	7200000	shares
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13482000
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1211000
CY2012Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	4148000
CY2012Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0225	pure
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2438000
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	13088000
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	4456000
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	886381000
CY2012Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0350	pure
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	79652000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	103000	shares
CY2012Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	11526000
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	797000
CY2012Q4	us-gaap	Restricted Investments RestrictedInvestments	48250000
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	20800000
CY2012Q4	us-gaap	Land Land	4263000
CY2012Q4	us-gaap	Goodwill Goodwill	3492000
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3552000	shares
CY2012Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.05	pure
CY2012Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	426467000
CY2012Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	6028000	shares
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	3214000
CY2012Q4	us-gaap	Liabilities Liabilities	193975000
CY2012Q4	us-gaap	Investments Investments	493210000
CY2012Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	1952000
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1876000
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	13055000
CY2012Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2	452000
CY2012Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	47054000
CY2012Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	800000
CY2012Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	63417000
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	3687000
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	29.25
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	405641000
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	2000
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	10309000
CY2012Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	7507000
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	80246000
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	211000
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	4353000
CY2012Q4	us-gaap	Other Investments OtherInvestments	1902000
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance Noncurrent DeferredTaxAssetsValuationAllowanceNoncurrent	10939000
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	62310000	shares
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2200000
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	2710000
CY2012Q4	us-gaap	Long Term Investments LongTermInvestments	332729000
CY2012Q4	us-gaap	Deferred Compensation Arrangement With Individual Recorded Liability DeferredCompensationArrangementWithIndividualRecordedLiability	200000
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	370000
CY2012Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	23803000
CY2012Q4	us-gaap	Assets Current AssetsCurrent	446171000
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	16247000
CY2012Q4	us-gaap	Other Receivables OtherReceivables	16253000
CY2012Q4	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	2561000
CY2012Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	18620000
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2149000
CY2012Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	19300000
CY2012Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	609000
CY2012Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	61587000
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	197719000
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	46000000
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	226000
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	224517000
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	692406000
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	12730000
CY2012Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	2566000
CY2012Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	46700000
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	17406000
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	116000
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2271000
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	4080000
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	42173000
CY2012Q4	adtn	Defined Benefit Plan Expected Future Benefit Payments Total DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal	5522000
CY2012Q4	adtn	Number Of Stock Option Plans NumberOfStockOptionPlans	2	OptionPlan
CY2012Q4	adtn	Building Building	68479000
CY2012Q4	adtn	Estimated Fair Value Of Bond EstimatedFairValueOfBond	48800000
CY2012Q4	adtn	Engineering And Other Equipment Gross EngineeringAndOtherEquipmentGross	99081000
CY2012Q4	adtn	Deferred Tax Assets Federal Loss And Research Carry Forwards Non Current DeferredTaxAssetsFederalLossAndResearchCarryForwardsNonCurrent	12210000
CY2012Q4	adtn	Deferred Tax Assets Foreign And Domestic Loss Unamortized Research And Development Cost And State Credit Carry Forwards Non Current DeferredTaxAssetsForeignAndDomesticLossUnamortizedResearchAndDevelopmentCostAndStateCreditCarryForwardsNonCurrent	23500000
CY2012Q4	adtn	Deferred Tax Assets Foreign Loss And State Credit Carry Forwards Non Current DeferredTaxAssetsForeignLossAndStateCreditCarryForwardsNonCurrent	11327000
CY2012Q4	adtn	Deferred Tax Assets State Tax And Interest Expense Non Current DeferredTaxAssetsStateTaxAndInterestExpenseNonCurrent	1005000
CY2012Q4	adtn	Finished Goods Inventory Reserves FinishedGoodsInventoryReserves	2100000
CY2012Q4	adtn	Finite Lived Intangible Assets Accumulated Amortization And Impairment FiniteLivedIntangibleAssetsAccumulatedAmortizationAndImpairment	3059000
CY2012Q4	adtn	Raw Materials Reserves RawMaterialsReserves	9900000
CY2012Q4	adtn	Bond Debt Outstanding Classified As Current Liability BondDebtOutstandingClassifiedAsCurrentLiability	500000
CY2012Q4	adtn	Bonds Payable Carrying Amount BondsPayableCarryingAmount	46500000
CY2012Q4	adtn	Bonds Payable Fair Value BondsPayableFairValue	48800000
CY2012Q4	adtn	Share Based Payment Award Equity Instruments Other Than Options Adjustments To Shares Granted Due To Performance Conditions Weighted Average Grant Date Fair Value ShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsToSharesGrantedDueToPerformanceConditionsWeightedAverageGrantDateFairValue	26.65
CY2012Q4	adtn	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Adjustments To Shares Granted Due To Performance Conditions ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsToSharesGrantedDueToPerformanceConditions	17000	shares
CY2012Q4	adtn	Deferred Tax Assets Pension Obligations Non Current DeferredTaxAssetsPensionObligationsNonCurrent	605000
	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	8562000
	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0540	pure
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	586000
	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	68170000
	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0396	pure
	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	766000
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	674000
	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0225	pure
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	494000
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-804000
CY2010	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Foreign Countries EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToForeignCountries	31829000
CY2010	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	10545000
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.0237	pure
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1071000
CY2010	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	24942000
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	250000
CY2010	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Entitys Country Of Domicile EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToEntitysCountryOfDomicile	573845000
CY2010	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	2741000
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-74919000
CY2010	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	6557000
CY2010	us-gaap	Income Taxes Paid IncomeTaxesPaid	57662000
CY2010	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	24942000
CY2010	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	90300000
CY2010	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	1483000	shares
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	167118000
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	62490000	shares
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.3223	pure
CY2010	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	18316000
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2849000
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1394000
CY2010	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	22502000
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	168189000
CY2010	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	7067000
CY2010	us-gaap	Interest Paid InterestPaid	2411000
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	20300000
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	7717000
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0015	pure
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1355000	shares
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	6148000
CY2010	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	729000	shares
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6380000
CY2010	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1800000
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	153864000
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	650000
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7717000
CY2010	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	246811000
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9095000
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.82
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	28600000
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1324000
CY2010	us-gaap	Net Income Loss NetIncomeLoss	113989000
CY2010	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	4909000
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.78
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	16000
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18316000
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	63879000	shares
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-11722000
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	598000
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3500	pure
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	12191000
CY2010	us-gaap	Gross Profit GrossProfit	358863000
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.0046	pure
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	123084000
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	818000
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.0290	pure
CY2010	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	695000
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	48870000
CY2010	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	574000
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	197000
CY2010	us-gaap	Tax Benefit From Stock Options Exercised1 TaxBenefitFromStockOptionsExercised1	4909000
CY2010	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	114699000
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	54200000
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1394000
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	8700000
CY2010	us-gaap	Payments Of Dividends PaymentsOfDividends	22500000
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	-0.0086	pure
CY2010	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	10000
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9872000
CY2010	us-gaap	Sales Revenue Net SalesRevenueNet	605674000
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4600000
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	4404000
CY2010	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	4380000
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodFairValue	6900000
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	630000
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	400000
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	55524000
CY2010	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	275442000
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	22502000
CY2010	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	340489000
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	274000
CY2010	us-gaap	Depreciation Depreciation	10200000
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.0034	pure
CY2010	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-2000
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7717000
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2000000	shares
CY2010	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-135000
CY2010	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	11008000
CY2010	us-gaap	Interest Expense InterestExpense	2436000
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	11.69
CY2010	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-3017000
CY2010	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2997000
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-5223000
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	92789000
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-999000
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	4404000
CY2010	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	1183000
CY2010	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0333	pure
CY2010	adtn	Increase Decrease In Accrued Expenses And Other Liabilities IncreaseDecreaseInAccruedExpensesAndOtherLiabilities	8626000
CY2010	adtn	Percentage Of Sales To Major Customers PercentageOfSalesToMajorCustomers	0.49	pure
CY2010	adtn	Number Of Executive Officers To Whom Grants Were Made NumberOfExecutiveOfficersToWhomGrantsWereMade	5	Employees
CY2010	adtn	Number Of Other Customers Accounted For More Than Threshold Percentage Of Revenue NumberOfOtherCustomersAccountedForMoreThanThresholdPercentageOfRevenue	0	Customer
CY2010	adtn	Deferred Compensation Adjustments Due To Fair Value Of Trust Assets DeferredCompensationAdjustmentsDueToFairValueOfTrustAssets	400000
CY2010	adtn	Dividends Accrued For Unvested Restricted Stock Units DividendsAccruedForUnvestedRestrictedStockUnits	27000
CY2010	adtn	Realized Economic Incentives RealizedEconomicIncentives	1500000
CY2010	adtn	Threshold Percentage Of Revenue Generated By Major Customers ThresholdPercentageOfRevenueGeneratedByMajorCustomers	0.10	pure
CY2010	adtn	Incremental Common Shares Attributable To Share Based Other Payment Arrangements IncrementalCommonSharesAttributableToShareBasedOtherPaymentArrangements	34000	shares
CY2010	adtn	Stock Received As Payment Of Exercise Price Of Employee Stock Options StockReceivedAsPaymentOfExercisePriceOfEmployeeStockOptions	4000	shares
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-694000
CY2011	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Foreign Countries EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToForeignCountries	84434000
CY2011	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	11499000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.0184	pure
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1490000
CY2011	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	34125000
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1000000
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	22661000
CY2011	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Entitys Country Of Domicile EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToEntitysCountryOfDomicile	632795000
CY2011	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-2741000
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-122959000
CY2011	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	7642000
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	51402000
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	34125000
CY2011	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	100301000
CY2011	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	2860000
CY2011	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	1813000	shares
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	204652000
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64145000	shares
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.3278	pure
CY2011	us-gaap	Product Warranty Accrual Additions From Business Acquisition ProductWarrantyAccrualAdditionsFromBusinessAcquisition	33000
CY2011	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	35565000
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4939000
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-154000
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	23124000
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	206142000
CY2011	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	7848000
CY2011	us-gaap	Interest Paid InterestPaid	2396000
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	39800000
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	9169000
CY2011	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	196256000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0007	pure
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1236000	shares
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	11456000
CY2011	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1112000	shares
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7177000
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2400000
CY2011	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	36980000
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	189138000
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1321000
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9169000
CY2011	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	302911000
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-13846000
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.16
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	12734000
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y9M11D
CY2011	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	7800000
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	575000
CY2011	us-gaap	Net Income Loss NetIncomeLoss	138577000
CY2011	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	10525000
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.12
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	92000
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	35565000
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65416000	shares
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-16191000
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	389000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3500	pure
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	13641000
CY2011	us-gaap	Gross Profit GrossProfit	414318000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.0027	pure
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	124731000
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	840000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.0250	pure
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	17000
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	59382000
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-522000
CY2011	us-gaap	Tax Benefit From Stock Options Exercised1 TaxBenefitFromStockOptionsExercised1	10525000
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	124879000
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67565000
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-154000
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-13004000
CY2011	us-gaap	Payments Of Dividends PaymentsOfDividends	23100000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	-0.0090	pure
CY2011	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	10000
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11912000
CY2011	us-gaap	Sales Revenue Net SalesRevenueNet	717229000
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4300000
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	9373000
CY2011	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss
CY2011	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	6617000
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodFairValue	7300000
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	354000
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	700000
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	66990000
CY2011	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	466243000
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	23124000
CY2011	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	554629000
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	431000
CY2011	us-gaap	Depreciation Depreciation	10800000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.0003	pure
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-6000
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9169000
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1200000	shares
CY2011	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	5781000
CY2011	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	12454000
CY2011	us-gaap	Interest Expense InterestExpense	2398000
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	9.53
CY2011	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3169000
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	6178000
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	7427000
CY2011	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	2079000
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	150606000
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-688000
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	9373000
CY2011	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	1187000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0319	pure
CY2011	adtn	Increase Decrease In Accrued Expenses And Other Liabilities IncreaseDecreaseInAccruedExpensesAndOtherLiabilities	6309000
CY2011	adtn	Percentage Of Sales To Major Customers PercentageOfSalesToMajorCustomers	0.44	pure
CY2011	adtn	Number Of Major Customers NumberOfMajorCustomers	3	Customer
CY2011	adtn	Number Of Executive Officers To Whom Grants Were Made NumberOfExecutiveOfficersToWhomGrantsWereMade	5	Employees
CY2011	adtn	Number Of Other Customers Accounted For More Than Threshold Percentage Of Revenue NumberOfOtherCustomersAccountedForMoreThanThresholdPercentageOfRevenue	0	Customer
CY2011	adtn	Weighted Average Exchange Rate During Period WeightedAverageExchangeRateDuringPeriod	1.00
CY2011	adtn	Weighted Average Exchange Rate During Period WeightedAverageExchangeRateDuringPeriod	1.38
CY2011	adtn	Deferred Compensation Adjustments Due To Fair Value Of Trust Assets DeferredCompensationAdjustmentsDueToFairValueOfTrustAssets	-200000
CY2011	adtn	Dividends Accrued For Unvested Restricted Stock Units DividendsAccruedForUnvestedRestrictedStockUnits	52000
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-7961000
CY2012	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	6049000
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	500000
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-7496000
CY2012	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Entitys Country Of Domicile EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToEntitysCountryOfDomicile	470369000
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5014000
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Type DocumentType	10-K
CY2011	adtn	Realized Economic Incentives RealizedEconomicIncentives	1900000
CY2011	adtn	Threshold Percentage Of Revenue Generated By Major Customers ThresholdPercentageOfRevenueGeneratedByMajorCustomers	0.10	pure
CY2011	adtn	Incremental Common Shares Attributable To Share Based Other Payment Arrangements IncrementalCommonSharesAttributableToShareBasedOtherPaymentArrangements	35000	shares
CY2011	adtn	Stock Received As Payment Of Exercise Price Of Employee Stock Options StockReceivedAsPaymentOfExercisePriceOfEmployeeStockOptions	7000	shares
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0000926282
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Trading Symbol TradingSymbol	ADTN
CY2012	dei	Entity Registrant Name EntityRegistrantName	ADTRAN INC
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	183000
CY2012	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Foreign Countries EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToForeignCountries	150245000
CY2012	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-212000
CY2012	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	370000	shares
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14079000
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.0321	pure
CY2012	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	7657000
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	31021000
CY2012	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	16.36
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	6049000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	19.50
CY2012	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y6M
CY2012	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	125951000
CY2012	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	5363000
CY2012	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	393000	shares
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	80926000
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	63259000	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	106000	shares
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y2M12D
CY2012	us-gaap	Debt Instrument Maturity Date DebtInstrumentMaturityDate	2020-01-01
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.3523	pure
CY2012	us-gaap	Product Warranty Accrual Additions From Business Acquisition ProductWarrantyAccrualAdditionsFromBusinessAcquisition	3781000
CY2012	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	39362000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	27.75
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4365000
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	170000
CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	22813000
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	72965000
CY2012	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	8030000
CY2012	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1862000
CY2012	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	592000
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.0380	pure
CY2012	us-gaap	Interest Paid InterestPaid	2348000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4500000
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	9264000
CY2012	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	17.93
CY2012	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	119600000
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.0103	pure
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	488000	shares
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	25444000
CY2012	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1786000	shares
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3766000
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	3900000
CY2012	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Plan Assets DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets	18063000
CY2012	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	23621000
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	56169000
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1234000
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9264000
CY2012	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	303971000
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1834000
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.75
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-7163000
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y8M16D
CY2012	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	34000
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3785000
CY2012	us-gaap	Net Income Loss NetIncomeLoss	47263000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1104000	shares
CY2012	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod
CY2012	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	1905000
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.74
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	49000
CY2012	us-gaap	Defined Contribution Plan Maximum Annual Contribution Per Employee Percent DefinedContributionPlanMaximumAnnualContributionPerEmployeePercent	0.04	pure
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	39362000
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	63774000	shares
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-55170000
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	-86000
CY2012	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	1753000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1	P3Y
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3500	pure
CY2012	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	11006000
CY2012	us-gaap	Gross Profit GrossProfit	316643000
CY2012	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	766000
CY2012	us-gaap	Revenue Recognition Deferred Revenue RevenueRecognitionDeferredRevenue	<div> <p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Unearned Revenue</b></font></p> <p style="MARGIN-TOP: 6px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">Unearned revenue primarily represents customer billings on our maintenance service programs and unearned revenues relating to multiple element contracts where we still have contractual obligations to our customers. We currently offer maintenance contracts ranging from one to five years, primarily on Enterprise Networks Division products sold through distribution channels. Revenue attributable to maintenance contracts is recognized on a straight-line basis over the related contract term. In addition, we provide software maintenance and a variety of hardware maintenance services to Carrier Networks Division customers, which include customers of the acquired NSN BBA business, under contracts with terms up to ten years. At December 31, 2012 and 2011, unearned revenue was as follows:</font></p> <p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">  </p> <table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <!-- Begin Table Head --> <tr> <td width="80%"></td> <td valign="bottom" width="4%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="4%"></td> <td></td> <td></td> <td></td> </tr> <tr> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="1"><b><i>(In thousands)</i></b></font></td> <td valign="bottom"><font size="1">  </font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td> <td valign="bottom"><font size="1"> </font></td> <td valign="bottom"><font size="1">  </font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td> <td valign="bottom"><font size="1"> </font></td> </tr> <!-- End Table Head --><!-- Begin Table Body --> <tr bgcolor="#CCEEFF"> <td valign="top"> <p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Current unearned revenue</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">38,051</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">  </font></td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">9,965</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">  </font></td> </tr> <tr> <td valign="top"> <p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-current unearned revenue</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"> </font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">23,803</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">  </font></td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"> </font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,874</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">  </font></td> </tr> <tr style="FONT-SIZE: 1px"> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"> <p style="BORDER-TOP: #000000 1px solid"> </p> </td> <td valign="bottom"> <p style="BORDER-TOP: #000000 1px solid"> </p> </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> <p style="BORDER-TOP: #000000 1px solid"> </p> </td> <td valign="bottom"> <p style="BORDER-TOP: #000000 1px solid"> </p> </td> <td> </td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> <p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Total</b></font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>61,854</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>  </b></font></td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>14,839</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2"><b>  </b></font></td> </tr> <tr style="FONT-SIZE: 1px"> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"> <p style="BORDER-TOP: #000000 3px double"> </p> </td> <td valign="bottom"> <p style="BORDER-TOP: #000000 3px double"> </p> </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> <p style="BORDER-TOP: #000000 3px double"> </p> </td> <td valign="bottom"> <p style="BORDER-TOP: #000000 3px double"> </p> </td> <td> </td> </tr> <!-- End Table Body --></table> </div>
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.0101	pure
CY2012	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Benefit Obligation DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation	18063000
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	45429000
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	302000
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	755000
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	26225000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	21000	shares
CY2012	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Plan Assets DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets	35000
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1045000
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	965000
CY2012	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-4000
CY2012	us-gaap	Tax Benefit From Stock Options Exercised1 TaxBenefitFromStockOptionsExercised1	1905000
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	134523000
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25702000
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	34000
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-187000
CY2012	us-gaap	Payments Of Dividends PaymentsOfDividends	22800000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod		shares
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	-0.0446	pure
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	51000	shares
CY2012	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	10000
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12075000
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	620614000
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4600000
CY2012	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	0
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	22813000
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1456000
CY2012	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss
CY2012	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	8257000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodFairValue	7700000
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	507000
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2000000
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	29487000
CY2012	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	282039000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	25.73
CY2012	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	282740000
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-504000
CY2012	us-gaap	Depreciation Depreciation	12100000
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.0236	pure
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	214000
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9264000
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3200000	shares
CY2012	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	3609000
CY2012	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-2977000
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<div> <p style="MARGIN-TOP: 18px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Use of Estimates</b></font></p> <p style="MARGIN-TOP: 6px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expense during the reporting period. Our more significant estimates include the allowance for doubtful accounts, obsolete and excess inventory reserves, warranty reserves, customer rebates, allowance for sales returns, determination of the unearned revenue components of multiple element sales agreements, estimated costs to complete obligations associated with unearned revenues, estimated income tax contingencies, the fair value of stock-based compensation, impairment of goodwill, value and estimated lives of intangible assets, and the evaluation of other-than-temporary declines in the value of investments. Actual amounts could differ significantly from these estimates.</font></p> </div>
CY2012	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	9550000
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	1952000
CY2012	us-gaap	Interest Expense InterestExpense	2347000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	5.60
CY2012	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-1960000
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	7265000
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	120000
CY2012	adtn	Maximum Percentage Of Cash Compensation Allowed To Be Deferred Under Deferred Compensation Plan MaximumPercentageOfCashCompensationAllowedToBeDeferredUnderDeferredCompensationPlan	0.25	pure
CY2012	adtn	Estimated Forfeitures For Stock Options EstimatedForfeituresForStockOptions	0.016	pure
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	266000
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	85628000
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	135000
CY2012	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	494000
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	1456000
CY2012	adtn	Threshold Percentage Of Revenue Generated By Major Customers ThresholdPercentageOfRevenueGeneratedByMajorCustomers	0.10	pure
CY2012	adtn	Incremental Common Shares Attributable To Share Based Other Payment Arrangements IncrementalCommonSharesAttributableToShareBasedOtherPaymentArrangements	27000	shares
CY2012	adtn	Criteria For Benefit Distribution CriteriaForBenefitDistribution	Six months after termination of employment in a single lump sum payment
CY2012	adtn	Criteria Of Employer To Contribute In Employee Saving Plan CriteriaOfEmployerToContributeInEmployeeSavingPlan	100% of an employee's first 3% of contributions and 50% of their next 2% of contributions
CY2012	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	1456000
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0378	pure
CY2012	adtn	Increase Decrease In Accrued Expenses And Other Liabilities IncreaseDecreaseInAccruedExpensesAndOtherLiabilities	11583000
CY2012	adtn	Other Than Temporary Impairment Security Specific Assumptions Utilized OtherThanTemporaryImpairmentSecuritySpecificAssumptionsUtilized	0.25	pure
CY2012	adtn	Number Of Operating Reportable Segments NumberOfOperatingReportableSegments	2	Segment
CY2012	adtn	Percentage Of Sales To Major Customers PercentageOfSalesToMajorCustomers	0.41	pure
CY2012	adtn	Number Of Major Customers NumberOfMajorCustomers	1	Customer
CY2012	adtn	Original Maturity Period Of Cash And Cash Equivalents OriginalMaturityPeriodOfCashAndCashEquivalents	Three months or less
CY2012	adtn	Maximum Number Of Years Medical Dental And Prescription Drug Coverage To Spouse Of Deceased Officer MaximumNumberOfYearsMedicalDentalAndPrescriptionDrugCoverageToSpouseOfDeceasedOfficer	30 years
CY2012	adtn	Number Of Executive Officers To Whom Grants Were Made NumberOfExecutiveOfficersToWhomGrantsWereMade	5	Employees
CY2012	adtn	Number Of Marketable Equity Securities Subjected To Impairment Test NumberOfMarketableEquitySecuritiesSubjectedToImpairmentTest	152	Securities
CY2012	adtn	Number Of Other Customers Accounted For More Than Threshold Percentage Of Revenue NumberOfOtherCustomersAccountedForMoreThanThresholdPercentageOfRevenue	1	Customer
CY2012	adtn	Number Of Product Categories NumberOfProductCategories	3	Segment
CY2012	adtn	Weighted Average Exchange Rate During Period WeightedAverageExchangeRateDuringPeriod	1.00
CY2012	adtn	Weighted Average Exchange Rate During Period WeightedAverageExchangeRateDuringPeriod	1.29
CY2012	adtn	Deferred Compensation Adjustments Due To Fair Value Of Trust Assets DeferredCompensationAdjustmentsDueToFairValueOfTrustAssets	900000
CY2012	adtn	Dividends Accrued For Unvested Restricted Stock Units DividendsAccruedForUnvestedRestrictedStockUnits	-15000
CY2012	adtn	Maximum Statutory Compensation Eligible For Match Under Code MaximumStatutoryCompensationEligibleForMatchUnderCode	250000
CY2012	adtn	Realized Economic Incentives RealizedEconomicIncentives	1400000
CY2012	adtn	Percentage Contributions Under Savings Plan Vested PercentageContributionsUnderSavingsPlanVested	1.00	pure
CY2012	adtn	Percentage Of Employer Match For First Three Percent Employee Contribution To Savings Plan PercentageOfEmployerMatchForFirstThreePercentEmployeeContributionToSavingsPlan	1.00	pure
CY2012	adtn	Percentage Of Employer Match To Employee Additional Two Percent Contribution To Savings Plan PercentageOfEmployerMatchToEmployeeAdditionalTwoPercentContributionToSavingsPlan	0.50	pure
CY2012	adtn	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Earlier Contractual Life ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodEarlierContractualLife	P10Y
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	45606000
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	34258000
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2011Q1	us-gaap	Gross Profit GrossProfit	98795000
CY2011Q1	us-gaap	Sales Revenue Net SalesRevenueNet	165522000
CY2011Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	51310000
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	36943000
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2011Q2	us-gaap	Gross Profit GrossProfit	106827000
CY2011Q2	us-gaap	Sales Revenue Net SalesRevenueNet	184227000
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	16181000
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.20
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	12960000
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
CY2012Q1	us-gaap	Gross Profit GrossProfit	74087000
CY2012Q1	us-gaap	Sales Revenue Net SalesRevenueNet	134735000
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	26838000
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	21070000
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2012Q2	us-gaap	Gross Profit GrossProfit	95201000
CY2012Q2	us-gaap	Sales Revenue Net SalesRevenueNet	183998000
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	51107000
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	36213000
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2011Q3	us-gaap	Gross Profit GrossProfit	109476000
CY2011Q3	us-gaap	Sales Revenue Net SalesRevenueNet	192194000
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	10276000
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.15
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	9272000
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2012Q3	us-gaap	Gross Profit GrossProfit	79972000
CY2012Q3	us-gaap	Sales Revenue Net SalesRevenueNet	162125000
CY2011Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	41115000
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	31163000
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2011Q4	us-gaap	Gross Profit GrossProfit	99220000
CY2011Q4	us-gaap	Sales Revenue Net SalesRevenueNet	175286000
CY2012Q4	us-gaap	Impairment Of Investments ImpairmentOfInvestments	17000
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	2874000
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	3961000
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2012Q4	us-gaap	Gross Profit GrossProfit	67383000
CY2012Q4	us-gaap	Sales Revenue Net SalesRevenueNet	139756000

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$ADTN
ADTRAN Holdings, Inc. Stock $adtn

2011 Q4 Form 10-K Financial Statement

#000119312513082523 Filed on February 28, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ADTN ADTRAN Holdings, Inc. Stock $adtn

2011 Q4 Form 10-K Financial Statement

#000119312513082523 Filed on February 28, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ADTN
ADTRAN Holdings, Inc. Stock $adtn