$TER
TERADYNE, INC Stock $ter

$ter Overview Financials Valuation SEC Filings Company Website

2017 Q1 Form 10-K Financial Statement

#000119312517064638 Filed on March 01, 2017

Income Statement

Concept	2017 Q1	2015 Q4	2015 Q3
Revenue		$466.0M	$512.7M
YoY Change		44.17%	7.27%
Cost Of Revenue		$207.4M	$214.2M
YoY Change		27.21%	-1.25%
Gross Profit		$258.6M	$298.6M
YoY Change		61.41%	14.34%
Gross Profit Margin		55.5%	58.23%
Selling, General & Admin		$77.48M	$77.07M
YoY Change		-15.0%	5.49%
% of Gross Profit		29.96%	25.81%
Research & Development		$74.03M	$75.83M
YoY Change		-6.52%	5.39%
% of Gross Profit		28.62%	25.4%
Depreciation & Amortization		$37.10M	$33.20M
YoY Change		-1.59%	-12.86%
% of Gross Profit		14.35%	11.12%
Operating Expenses		$171.8M	$167.8M
YoY Change		-40.01%	3.01%
Operating Profit		$86.80M	$130.8M
YoY Change		-168.8%	33.14%
Interest Expense		$508.0K	$444.0K
YoY Change		137.38%	208.33%
% of Operating Profit		0.59%	0.34%
Other Income/Expense, Net		-$596.0K	$116.0K
YoY Change		28.73%	-82.26%
Pretax Income		$87.41M	$132.1M
YoY Change		-170.03%	31.26%
Income Tax		$15.96M	$29.26M
% Of Pretax Income		18.25%	22.14%
Net Earnings		$71.45M	$102.9M
YoY Change		-168.83%	24.03%
Net Earnings / Revenue		15.33%	20.06%
Basic Earnings Per Share		$0.34	$0.48
Diluted Earnings Per Share		$0.34	$0.48
COMMON SHARES
Basic Shares Outstanding	200.3M shares	210.0M shares	213.8M shares
Diluted Shares Outstanding		211.7M shares	215.5M shares

Balance Sheet

Concept	2015 Q4	2015 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$819.6M	$752.7M
YoY Change	-1.01%	-6.67%
Cash & Equivalents	$264.7M	$300.7M
Short-Term Investments	$525.4M	$452.0M
Other Short-Term Assets	$6.194M	$6.596M
YoY Change	-5.89%	-9.69%
Inventory	$153.6M	$121.8M
Prepaid Expenses	$91.52M	$80.25M
Receivables	$211.3M	$296.7M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$1.260B	$1.316B
YoY Change	1.3%	-6.04%
LONG-TERM ASSETS
Property, Plant & Equipment	$273.4M	$291.9M
YoY Change	-16.91%	-13.07%
Goodwill	$488.4M	$495.4M
YoY Change	78.62%	36.93%
Intangibles	$239.8M	$279.1M
YoY Change	25.83%	41.35%
Long-Term Investments	$257.6M	$275.9M
YoY Change	-45.28%	-26.39%
Other Assets	$13.08M	$13.36M
YoY Change	25.54%	35.63%
Total Long-Term Assets	$1.289B	$1.376B
YoY Change	-0.46%	6.37%
TOTAL ASSETS
Total Short-Term Assets	$1.260B	$1.316B
Total Long-Term Assets	$1.289B	$1.376B
Total Assets	$2.549B	$2.693B
YoY Change	0.4%	-0.08%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$92.36M	$86.46M
YoY Change	93.37%	43.37%
Accrued Expenses	$182.1M	$180.0M
YoY Change	20.44%	-4.71%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$372.9M	$402.1M
YoY Change	27.89%	21.91%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$185.0M	$177.9M
YoY Change	27.85%	27.62%
Total Long-Term Liabilities	$185.0M	$177.9M
YoY Change	27.85%	27.62%
TOTAL LIABILITIES
Total Short-Term Liabilities	$372.9M	$402.1M
Total Long-Term Liabilities	$185.0M	$177.9M
Total Liabilities	$582.9M	$618.6M
YoY Change	26.84%	22.47%
SHAREHOLDERS EQUITY
Retained Earnings	$467.8M	$588.5M
YoY Change	-23.32%	-19.04%
Common Stock	$1.506B	$26.56M
YoY Change	2.86%	-1.84%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.966B	$2.074B
YoY Change
Total Liabilities & Shareholders Equity	$2.549B	$2.693B
YoY Change	0.4%	-0.08%

Cashflow Statement

Concept	2015 Q4	2015 Q3
OPERATING ACTIVITIES
Net Income	$71.45M	$102.9M
YoY Change	-168.83%	24.03%
Depreciation, Depletion And Amortization	$37.10M	$33.20M
YoY Change	-1.59%	-12.86%
Cash From Operating Activities	$179.1M	$156.0M
YoY Change	2.34%	16.68%
INVESTING ACTIVITIES
Capital Expenditures	-$20.60M	-$25.00M
YoY Change	-8.85%	-54.55%
Acquisitions
YoY Change
Other Investing Activities	-$56.40M	$37.60M
YoY Change	0.89%	-131.52%
Cash From Investing Activities	-$77.10M	$12.60M
YoY Change	-1.78%	-107.23%
FINANCING ACTIVITIES
Cash Dividend Paid	$12.60M	$12.80M
YoY Change		0.0%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-108.5M	-86.90M
YoY Change	675.0%	3678.26%
NET CHANGE
Cash From Operating Activities	179.1M	156.0M
Cash From Investing Activities	-77.10M	12.60M
Cash From Financing Activities	-108.5M	-86.90M
Net Change In Cash	-6.500M	81.70M
YoY Change	-107.88%	-290.44%
FREE CASH FLOW
Cash From Operating Activities	$179.1M	$156.0M
Capital Expenditures	-$20.60M	-$25.00M
Free Cash Flow	$199.7M	$181.0M
YoY Change	1.06%	-4.08%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015Q1	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	16.82
CY2016Q1	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	17.57
CY2017Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	200302178	shares
CY2014Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	16.66
CY2015Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	16.40
CY2016Q3	dei	Entity Public Float EntityPublicFloat	3900000000
CY2016Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	16.74
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	15.60
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	14213000	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2706000	shares
CY2013Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6660000
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	1985094000
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21203000
CY2013Q4	us-gaap	Extended Product Warranty Accrual ExtendedProductWarrantyAccrual	34909000
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	341638000
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	17.24
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	1089000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	12443000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	1507000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1507000	shares
CY2014Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	8942000
CY2014Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	507620000
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	2078980000
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	30418000
CY2014Q4	us-gaap	Extended Product Warranty Accrual ExtendedProductWarrantyAccrual	43300000
CY2014Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	3350000
CY2014Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	16101000
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	294256000
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	17936000
CY2014Q4	us-gaap	Assets Assets	2538520000
CY2014Q4	us-gaap	Goodwill Goodwill	273438000
CY2014Q4	us-gaap	Goodwill Gross GoodwillGross	781058000
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	17936000
CY2014Q4	ter	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentTax	1598000
CY2014Q4	ter	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	-453000
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	17.46
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	779000	shares
CY2015Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2015Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	203641000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	10914000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	1121000	shares
CY2015Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2015Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	203641000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1121000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.21
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	467828000
CY2015Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6925000
CY2015Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	32156000
CY2015Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	458000
CY2015Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	25745000
CY2015Q4	us-gaap	Common Stock Value CommonStockValue	25455000
CY2015Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1480647000
CY2015Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	575959000
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	36792000
CY2015Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	303227000
CY2015Q4	us-gaap	Liabilities Liabilities	582888000
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2548674000
CY2015Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	119400000
CY2015Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	507620000
CY2015Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	113994000
CY2015Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	89432000
CY2015Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	21936000
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-8144000
CY2015Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	92358000
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	1965786000
CY2015Q4	us-gaap	Extended Product Warranty Accrual ExtendedProductWarrantyAccrual	46499000
CY2015Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	26663000
CY2015Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2015Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2145000
CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2407000
CY2015Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	21751000
CY2015Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	500000
CY2015Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	103531000
CY2015Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	43727000
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	372857000
CY2015Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	37436000
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	43039000
CY2015Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	68433000
CY2015Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	20541000
CY2015Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	15500000
CY2015Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	4019000
CY2015Q4	us-gaap	Assets Current AssetsCurrent	1259968000
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	600800000
CY2015Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	10232000
CY2015Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	502000
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	7354000
CY2015Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	32825000
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	6194000
CY2015Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	91519000
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	273414000
CY2015Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	10716000
CY2015Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	477696000
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	601660000
CY2015Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	108797000
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	264705000
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	7989000
CY2015Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	44684000
CY2015Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	35714000
CY2015Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	54973000
CY2015Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	7404000
CY2015Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	636000
CY2015Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	-37000
CY2015Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	239831000
CY2015Q4	us-gaap	Inventory Net InventoryNet	153588000
CY2015Q4	us-gaap	Land Land	16561000
CY2015Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	211293000
CY2015Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	745498000
CY2015Q4	us-gaap	Available For Sale Securities Noncurrent AvailableForSaleSecuritiesNoncurrent	265928000
CY2015Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	2630000
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	31742000
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	9674000
CY2015Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	29445000
CY2015Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	82612000
CY2015Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	595445000
CY2015Q4	us-gaap	Noncurrent Assets NoncurrentAssets	273414000
CY2015Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	849373000
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	11729000
CY2015Q4	us-gaap	Assets Assets	2548674000
CY2015Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	743624000
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	900000
CY2015Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	168185000
CY2015Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	125146000
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	26563000
CY2015Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	546388000
CY2015Q4	us-gaap	Goodwill Goodwill	488413000
CY2015Q4	us-gaap	Goodwill Gross GoodwillGross	996033000
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2015Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	73117000
CY2015Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	47646000
CY2015Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	43328000
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13080000
CY2015Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	12974000
CY2015Q4	us-gaap	Prepaid Taxes PrepaidTaxes	3781000
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	11729000
CY2015Q4	ter	Contract And Manufacturer Prepaid ContractAndManufacturerPrepaid	66283000
CY2015Q4	ter	Deferred Revenue And Customer Advances DeferredRevenueAndCustomerAdvances	111272000
CY2015Q4	ter	Prepaid Maintenance And Other Services PrepaidMaintenanceAndOtherServices	8481000
CY2015Q4	ter	Deferred Revenue And Customer Advances Maintenance And Training DeferredRevenueAndCustomerAdvancesMaintenanceAndTraining	30616000
CY2015Q4	ter	Deferred Revenue And Customer Advances Undelivered Elements And Other DeferredRevenueAndCustomerAdvancesUndeliveredElementsAndOther	34157000
CY2015Q4	ter	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0
CY2015Q4	ter	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentTax	-459000
CY2015Q4	ter	Deferred Revenue And Customer Advances Current DeferredRevenueAndCustomerAdvancesCurrent	85527000
CY2015Q4	ter	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	-622000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	18.03
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	598000	shares
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	22500000	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	199177000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	9546000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	926000	shares
CY2016Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	598000	shares
CY2016Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	926000	shares
CY2016Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	11.93
CY2016Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	199177000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	8.32
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	926000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	11.93
CY2016Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	8.32
CY2016Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7203000
CY2016Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	28642000
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	15258000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.10	pure
CY2016Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	27600000
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	230292000
CY2016Q4	us-gaap	Purchase Obligation PurchaseObligation	260700000
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	72111000
CY2016Q4	us-gaap	Liabilities Liabilities	933834000
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2762493000
CY2016Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	116000000
CY2016Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	762566000
CY2016Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	109944000
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	40214000
CY2016Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	37282000
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-20214000
CY2016Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	95362000
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1828659000
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	9374000
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	16467000
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	7149000
CY2016Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	210000
CY2016Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	23463000
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	24897000
CY2016Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1593684000
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	595147000
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	38958000
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	13733000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	306868000
CY2016Q4	us-gaap	Extended Product Warranty Accrual ExtendedProductWarrantyAccrual	46753000
CY2016Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	12144000
CY2016Q4	us-gaap	Convertible Debt Noncurrent ConvertibleDebtNoncurrent	352669000
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2977000
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2356000
CY2016Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	30480000
CY2016Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	400000
CY2016Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000
CY2016Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	247900000
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	106938000
CY2016Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	51382000
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	10130000
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	372696000
CY2016Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	38332000
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	48369000
CY2016Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	22887000
CY2016Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	17117000
CY2016Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	1050000
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2821000
CY2016Q4	us-gaap	Assets Current AssetsCurrent	1623803000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	12309000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	730100000
CY2016Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	800000
CY2016Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	12806000
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	86593000
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	630000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	7874000
CY2016Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	22946000
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	8039000
CY2016Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	108454000
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	253821000
CY2016Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	10217000
CY2016Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	134600000
CY2016Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	871024000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	12839000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	365451000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	38173000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	1286696000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	1288206000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	732979000
CY2016Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	98031000
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	307884000
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	5244000
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	6529000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	57313000
CY2016Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	95261000
CY2016Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	107405000
CY2016Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	7712000
CY2016Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	-130000
CY2016Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	40600000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	28986000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	10042000
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	100401000
CY2016Q4	us-gaap	Inventory Net InventoryNet	135958000
CY2016Q4	us-gaap	Land Land	16561000
CY2016Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	192444000
CY2016Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	1304711000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	365873000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	37912000
CY2016Q4	us-gaap	Available For Sale Securities Noncurrent AvailableForSaleSecuritiesNoncurrent	433843000
CY2016Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	3032000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	31581000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	9922000
CY2016Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	31227000
CY2016Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Undistributed Earnings Of Foreign Subsidiaries DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries	1020000000
CY2016Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	82897000
CY2016Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	601835000
CY2016Q4	us-gaap	Noncurrent Assets NoncurrentAssets	253821000
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	848968000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	12468000
CY2016Q4	us-gaap	Assets Assets	2762493000
CY2016Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1304867000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	2900000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	871321000
CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	871024000
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	183844000
CY2016Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	135475000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	27247000
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	334900000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	414208000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	8053000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	3435000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	23037000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	26848000
CY2016Q4	us-gaap	Goodwill Goodwill	223343000
CY2016Q4	us-gaap	Goodwill Gross GoodwillGross	985909000
CY2016Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	58530000
CY2016Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	54482000
CY2016Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	46612000
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	12165000
CY2016Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	19097000
CY2016Q4	us-gaap	Prepaid Taxes PrepaidTaxes	4664000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	12468000
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	446000000
CY2016Q4	ter	Contract And Manufacturer Prepaid ContractAndManufacturerPrepaid	77017000
CY2016Q4	ter	Deferred Revenue And Customer Advances DeferredRevenueAndCustomerAdvances	107941000
CY2016Q4	ter	Prepaid Maintenance And Other Services PrepaidMaintenanceAndOtherServices	7676000
CY2016Q4	ter	Deferred Revenue And Customer Advances Maintenance And Training DeferredRevenueAndCustomerAdvancesMaintenanceAndTraining	39037000
CY2016Q4	ter	Deferred Revenue And Customer Advances Undelivered Elements And Other DeferredRevenueAndCustomerAdvancesUndeliveredElementsAndOther	22151000
CY2016Q4	ter	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0
CY2016Q4	ter	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentTax	209000
CY2016Q4	ter	Deferred Revenue And Customer Advances Current DeferredRevenueAndCustomerAdvancesCurrent	84478000
CY2016Q4	ter	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	-778000
CY2016Q4	ter	Unrecognized Tax Benefits If Recognized Would Impact Deferred Taxes UnrecognizedTaxBenefitsIfRecognizedWouldImpactDeferredTaxes	11400000
CY2015Q2	us-gaap	Debt Instrument Term DebtInstrumentTerm	P5Y
CY2015Q2	ter	Pledge Percentage Of Capital Stock PledgePercentageOfCapitalStock	0.65	pure
CY2015Q3	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	500000	shares
CY2016Q3	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	500000	shares
CY2014Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6600000
CY2015Q1	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	500000	shares
CY2016Q1	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	500000	shares
CY2014Q3	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	500000	shares
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0.363	pure
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.018	pure
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.079	pure
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.079	pure
CY2014	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.06
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	492062000
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	2000	shares
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y6M
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	222550000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	202908000	shares
CY2014	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.001	pure
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	189000	shares
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y2M12D
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	38000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	5.49
CY2014	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	19642000	shares
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.40
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.005	pure
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.581	pure
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.040	pure
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	16.97
CY2014	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	18.41
CY2014	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1248000	shares
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.148	pure
CY2014	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	12562000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	5013000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Equity Unit Purchase Agreements IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements	31000	shares
CY2014	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	14.38
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	89000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1870000	shares
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P4Y6M
CY2014	us-gaap	Revenues Revenues	1647824000
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	168982000
CY2014	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	19419000
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	12018000
CY2014	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	535000
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	11537000
CY2014	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	1364024000
CY2014	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	283800000
CY2014	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-2008000
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2417000
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	0
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	645000
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	96423000
CY2014	us-gaap	Net Income Loss NetIncomeLoss	81272000
CY2014	us-gaap	Interest Paid InterestPaid	4294000
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-51803000
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-8060000
CY2014	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-6153000
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	81961000
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	39868000
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	8414000
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	190972000
CY2014	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1578743000
CY2014	us-gaap	Payments Of Dividends PaymentsOfDividends	37425000
CY2014	us-gaap	Payments For Proceeds From Life Insurance Policies PaymentsForProceedsFromLifeInsurancePolicies	-4184000
CY2014	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	984000
CY2014	us-gaap	Investment Income Interest InvestmentIncomeInterest	6259000
CY2014	us-gaap	Income Tax Reconciliation Tax Holidays IncomeTaxReconciliationTaxHolidays	13200000
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	25893000
CY2014	us-gaap	Gross Profit GrossProfit	878808000
CY2014	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	900000
CY2014	us-gaap	Extended Product Warranty Accrual Warranties Issued ExtendedProductWarrantyAccrualWarrantiesIssued	29519000
CY2014	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-46564000
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	3781000
CY2014	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	814000
CY2014	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	15406000
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-372000
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2874000
CY2014	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-295000
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	689000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	247265000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-151889000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	95376000
CY2014	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-200000
CY2014	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2400000
CY2014	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	209000
CY2014	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	40307000
CY2014	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0
CY2014	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-630000
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-20449000
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-19928000
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	925000
CY2014	us-gaap	Depreciation Depreciation	73390000
CY2014	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	152544000
CY2014	us-gaap	Dividends Cash DividendsCash	37425000
CY2014	us-gaap	Extended Product Warranty Accrual Payments ExtendedProductWarrantyAccrualPayments	21128000
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14104000
CY2014	us-gaap	Increase Decrease In Deferred Revenue And Customer Advances And Deposits IncreaseDecreaseInDeferredRevenueAndCustomerAdvancesAndDeposits	22033000
CY2014	us-gaap	Interest Expense InterestExpense	6934000
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-332873000
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	295000
CY2014	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	21291000
CY2014	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	859729000
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	40307000
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	500000
CY2014	us-gaap	Adjustment For Amortization AdjustmentForAmortization	79154000
CY2014	us-gaap	Advertising Expense AdvertisingExpense	1900000
CY2014	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	28770000
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	5197000
CY2014	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	28157000
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	34032000
CY2014	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	535000
CY2014	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	200000
CY2014	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-33916000
CY2014	us-gaap	Inventory Write Down InventoryWriteDown	22193000
CY2014	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	291639000
CY2014	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	319713000
CY2014	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	24417000
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-206571000
CY2014	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	16000000
CY2014	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-169000
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	1433000
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1449000
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	17847000
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2480000
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	70771000
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-47382000
CY2014	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-404000
CY2014	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	98897000
CY2014	us-gaap	Cost Of Goods Sold CostOfGoodsSold	640787000
CY2014	us-gaap	Cost Of Revenue CostOfRevenue	769016000
CY2014	us-gaap	Cost Of Services CostOfServices	128229000
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	678000
CY2014	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-45430000
CY2014	us-gaap	Operating Expenses OperatingExpenses	782385000
CY2014	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0
CY2014	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	11116000
CY2014	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	570358000
CY2014	ter	Stock Issued During Period Value Share Based Compensation Net Of Shares Withheld For Taxes StockIssuedDuringPeriodValueShareBasedCompensationNetOfSharesWithheldForTaxes	9273000
CY2014	ter	Number Of Customer Accounted For Ten Percent Or Greater Revenue NumberOfCustomerAccountedForTenPercentOrGreaterRevenue	0	Customer
CY2014	ter	Book Value Of Internally Manufactured Test Systems Sold BookValueOfInternallyManufacturedTestSystemsSold	9700000
CY2014	ter	Increase Decrease In Prepaid Expense And Other Assets IncreaseDecreaseInPrepaidExpenseAndOtherAssets	-41537000
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2014	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	1365000
CY2014	ter	Deferred Income Tax Expense Benefit Net Of Adjustments DeferredIncomeTaxExpenseBenefitNetOfAdjustments	-19928000
CY2014	ter	Stock Issued During Period Shares Sale Of Stock And Exercise Of Stock Options StockIssuedDuringPeriodSharesSaleOfStockAndExerciseOfStockOptions	300000	shares
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.006	pure
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.022	pure
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.030	pure
CY2015	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P6Y8M12D
CY2015	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.05
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	412841000
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y2M12D
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	213321000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	211544000	shares
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.004	pure
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	284000	shares
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y10M24D
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.43
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1777000	shares
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.24
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.010	pure
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.165	pure
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.007	pure
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	17.08
CY2015	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	17.36
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	518000	shares
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.184	pure
CY2015	us-gaap	Extended Product Warranty Accrual Period Increase Decrease ExtendedProductWarrantyAccrualPeriodIncreaseDecrease	46500000
CY2015	us-gaap	Incremental Common Shares Attributable To Equity Unit Purchase Agreements IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements	41000	shares
CY2015	us-gaap	Product Warranty Accrual Period Increase Decrease ProductWarrantyAccrualPeriodIncreaseDecrease	6900000
CY2015	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	16.85
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	132000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1681000	shares
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P4Y2M12D
CY2015	us-gaap	Revenues Revenues	1639578000
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	89878000
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	299949000
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	282741000
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	10597000
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-11834000
CY2015	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	5406000
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	4715000
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	8528000
CY2015	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	1340566000
CY2015	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	299012000
CY2015	us-gaap	Product Warranty Accrual Additions From Business Acquisition ProductWarrantyAccrualAdditionsFromBusinessAcquisition	409000
CY2015	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-3159000
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3075000
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	0
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	390000
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	242969000
CY2015	us-gaap	Net Income Loss NetIncomeLoss	206477000
CY2015	us-gaap	Interest Paid InterestPaid	301000
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-15559000
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	57267000
CY2015	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-10124000
CY2015	us-gaap	Extended Product Warranty Accrual Additions From Business Acquisition ExtendedProductWarrantyAccrualAdditionsFromBusinessAcquisition	870000
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	193644000
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	30285000
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	6626000
CY2015	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	2253000
CY2015	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1424002000
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	50713000
CY2015	us-gaap	Payments For Proceeds From Life Insurance Policies PaymentsForProceedsFromLifeInsurancePolicies	-1098000
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3779000
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-8759000
CY2015	us-gaap	Investment Income Interest InvestmentIncomeInterest	7214000
CY2015	us-gaap	Income Tax Reconciliation Tax Holidays IncomeTaxReconciliationTaxHolidays	11500000
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	35218000
CY2015	us-gaap	Gross Profit GrossProfit	915643000
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	2500000
CY2015	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	3330000
CY2015	us-gaap	Extended Product Warranty Accrual Warranties Issued ExtendedProductWarrantyAccrualWarrantiesIssued	28549000
CY2015	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-17732000
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	792000
CY2015	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	559000
CY2015	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	11539000
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4817000
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	34000
CY2015	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-295000
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12833000
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	196854000
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	56270000
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	253124000
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-3000000
CY2015	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	1700000
CY2015	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	4625000
CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	30451000
CY2015	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	400000
CY2015	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	2489000
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-574000
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7124000
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1211000
CY2015	us-gaap	Depreciation Depreciation	68181000
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	140773000
CY2015	us-gaap	Dividends Cash DividendsCash	50732000
CY2015	us-gaap	Extended Product Warranty Accrual Payments ExtendedProductWarrantyAccrualPayments	26220000
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	46647000
CY2015	us-gaap	Increase Decrease In Deferred Revenue And Customer Advances And Deposits IncreaseDecreaseInDeferredRevenueAndCustomerAdvancesAndDeposits	17011000
CY2015	us-gaap	Interest Expense InterestExpense	1876000
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-113722000
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	295000
CY2015	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	19530000
CY2015	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1316131000
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	30451000
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	336000
CY2015	us-gaap	Adjustment For Amortization AdjustmentForAmortization	72592000
CY2015	us-gaap	Advertising Expense AdvertisingExpense	3300000
CY2015	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	21923000
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	16635000
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	35707000
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	53771000
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	4715000
CY2015	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	200000
CY2015	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-12095000
CY2015	us-gaap	Inventory Write Down InventoryWriteDown	21332000
CY2015	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	500000
CY2015	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	98200000
CY2015	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-5156000
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-328670000
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	15900000
CY2015	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-169000
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	704000
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1667000
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	999000
CY2015	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	292250000
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	306313000
CY2015	us-gaap	Other Restructuring Costs OtherRestructuringCosts	3600000
CY2015	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	5406000
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	7255000
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	708000
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	69031000
CY2015	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	3600000
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-29551000
CY2015	us-gaap	Cost Of Goods Sold CostOfGoodsSold	591772000
CY2015	us-gaap	Cost Of Revenue CostOfRevenue	723935000
CY2015	us-gaap	Cost Of Services CostOfServices	132163000
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1429000
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-7761000
CY2015	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	-254946000
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	48213000
CY2015	us-gaap	Operating Expenses OperatingExpenses	672674000
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0
CY2015	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	10806000
CY2015	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	360264000
CY2015	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	5080000
CY2015	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	299949000
CY2015	ter	Non Cash Charges Inventory Step Up NonCashChargesInventoryStepUp	1567000
CY2015	ter	Deferred Income Tax Expense Benefit Net Of Adjustments DeferredIncomeTaxExpenseBenefitNetOfAdjustments	-7124000
CY2015	ter	Stock Issued During Period Shares Sale Of Stock And Exercise Of Stock Options StockIssuedDuringPeriodSharesSaleOfStockAndExerciseOfStockOptions	200000	shares
CY2015	ter	Stock Issued During Period Value Share Based Compensation Net Of Shares Withheld For Taxes StockIssuedDuringPeriodValueShareBasedCompensationNetOfSharesWithheldForTaxes	8933000
CY2015	ter	Number Of Customer Accounted For Ten Percent Or Greater Revenue NumberOfCustomerAccountedForTenPercentOrGreaterRevenue	1	Customer
CY2015	ter	Book Value Of Internally Manufactured Test Systems Sold BookValueOfInternallyManufacturedTestSystemsSold	50700000
CY2015	ter	Increase Decrease In Prepaid Expense And Other Assets IncreaseDecreaseInPrepaidExpenseAndOtherAssets	-3034000
CY2016	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	<div> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 18px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>C.    RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS</b></font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">On January 26, 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) <font style="WHITE-SPACE: nowrap">2017-04,</font> <i>“Intangibles—Goodwill and Other (Topic 350): Simplifying the Accounting for Goodwill Impairment.”</i> The new guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. Goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance will remain largely unchanged. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The same <font style="WHITE-SPACE: nowrap">one-step</font> impairment test will be applied to goodwill at all reporting units, even those with zero or negative carrying amounts. Entities will be required to disclose the amount of goodwill at reporting units with zero or negative carrying amounts. The revised guidance will be applied prospectively, and is effective in 2020. Early adoption is permitted for any impairment tests performed after January 1, 2017. Teradyne is currently evaluating the impact of this ASU on its financial position, results of operations and statements of cash flows.</font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">On October 24, 2016, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2016-16,</font> <i>“Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory</i>.<i>”</i> Under current Generally Accepted Accounting Principles (“GAAP”), the tax effects of intra-entity asset transfers are deferred until the transferred asset is sold to a third party or otherwise recovered through use. The new guidance requires recognition of the tax expense from the sale of the asset in the seller’s tax jurisdiction when the transfer occurs, even though the <font style="WHITE-SPACE: nowrap">pre-tax</font> effects of that transaction are eliminated in consolidation. Any deferred tax asset that arises in the buyer’s jurisdiction would also be recognized at the time of the transfer. The new guidance does not apply to intra-entity transfers of inventory. The income tax consequences from the sale of inventory from one member of a consolidated entity to another will continue to be deferred until the inventory is sold to a third party. The new guidance will be effective in fiscal years beginning after December 15, 2017. Early adoption is permitted. The modified retrospective approach will be required for transition to the new guidance, with a cumulative-effect adjustment recorded in retained earnings as of the beginning of the period of adoption. Teradyne does not expect this ASU to have a material impact on its financial position, results of operations and statements of cash flows.</font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">On March 31, 2016, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2016-09,</font> <i>“Compensation-Stock Compensation (Topic 718): Improvements to Employee</i> <i>Share-Based Payment Accounting.”</i> This ASU changes how companies account for certain aspects of share-based payment awards to employees, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statements of cash flows. This pronouncement is effective for annual periods beginning after December 15, 2016. Early adoption is permitted. Adoption of the new guidance will require recognition of excess tax benefits and tax deficiencies in the consolidated statements of operations on a prospective basis, with a cumulative effect adjustment to retained earnings for any prior year excess tax benefits or tax deficiencies not previously recorded. Teradyne expects the cumulative effect adjustment to increase retained earnings and deferred tax assets by approximately $39 million. In the years ended December 31, 2016, 2015 and 2014, Teradyne recorded excess tax benefits of $6.1 million, $4.6 million, and $0.2 million, respectively, as a component of additional <font style="WHITE-SPACE: nowrap">paid-in</font> capital. In accordance with this ASU, amounts for future periods related to the difference between the fair value of a restricted stock unit (“RSU”) on the grant date and the fair value on the vest date will be recorded as a discrete benefit or expense to the current income tax provision in the period in which the RSU vests. A majority of the future amounts will be recorded during the first quarter consistent with the vesting of a majority of Teradyne’s RSU grants.</font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">In February 2016, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2016-02,</font> <i>“Leases (Topic 842).”</i> The guidance in this ASU supersedes the lease recognition requirements in Accounting Standards Codification (“ASC”) Topic 840, <i>“Leases.”</i> The new standard establishes a <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">right-of-use</font></font> (“ROU”) model that requires a lessee to record an ROU asset and a lease liability on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the consolidated statements of operations. The new standard is effective for annual periods beginning after December 15, 2018, including interim periods within those years, with early adoption permitted. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. Teradyne is currently evaluating the impact of this ASU on its financial position and results of operations.</font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">In January 2016, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2016-01,</font> <i>“Financial Instruments—Overall (Subtopic <font style="WHITE-SPACE: nowrap">825-10):</font> Recognition and Measurement of Financial Assets and Financial Liabilities</i>.<i>”</i> This ASU provides guidance for the recognition, measurement, presentation, and disclosure of financial instruments. The new pronouncement revises accounting related to equity investments and the presentation of certain fair value changes for financial liabilities measured at fair value. Among other things, it amends the presentation and disclosure requirements of equity securities that do not result in consolidation and are not accounted for under the equity method. Changes in the fair value of these equity securities will be recognized directly in net income. This pronouncement is effective for fiscal years and interim periods within those years beginning after December 15, 2017. Teradyne is currently evaluating the impact of this ASU on its financial position and results of operations.</font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">In November 2015, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2015-17,</font> <i>“Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes</i>.<i>”</i> ASU <font style="WHITE-SPACE: nowrap">2015-17</font> simplifies the presentation of deferred income taxes by eliminating the separate classification of deferred income tax liabilities and assets into current and noncurrent amounts in the balance sheet. The new guidance requires that all deferred tax liabilities and assets be classified as noncurrent in the balance sheet. This ASU is effective for annual periods beginning after December 15, 2016, and may be applied either prospectively or retrospectively to all periods presented. Early adoption is permitted. Teradyne early adopted this ASU prospectively in the first quarter of 2016.</font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">In April, 2015, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2015-03,</font> “<i>Simplifying the Presentation of Debt Issuance Costs,</i>” which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability, consistent with the presentation for debt discount. ASU <font style="WHITE-SPACE: nowrap">2015-03</font> does not specifically address requirements for the presentation or subsequent measurement of debt issuance costs related to <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">line-of-credit</font></font> arrangements. On August 8, 2015, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2015-15,</font> “<i>Interest—Imputation of Interest (Subtopic <font style="WHITE-SPACE: nowrap">835-30)</font></i>” clarifying that debt issuance costs related to <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">line-of-credit</font></font> arrangements could be presented as an asset and amortized over the term of the <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">line-of-credit</font></font> arrangement, regardless of whether there are any outstanding borrowings on the <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">line-of-credit</font></font> arrangement. Teradyne adopted this ASU in the first quarter of 2016. Adoption of this ASU did not have a material impact on Teradyne’s financial position and results of operations.</font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">In August 2014, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2014-15,</font> “<i>Presentation of Financial Statements—Going Concern (Subtopic <font style="WHITE-SPACE: nowrap">205-40).</font></i>” ASU <font style="WHITE-SPACE: nowrap">2014-15</font> provides guidance on management’s responsibility in evaluating whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. This ASU is effective for annual periods ending after December 15, 2016. Teradyne does not expect this ASU to have a material impact on its consolidated financial statements.</font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">In May 2014, the FASB issued ASU <font style="WHITE-SPACE: nowrap">2014-09,</font> “<i>Revenue from Contracts with Customers (Topic 606),</i>” which will replace numerous requirements in U.S. GAAP, including industry-specific requirements, and provide companies with a single revenue recognition model for recognizing revenue from contracts with customers. The core principle of the new standard is that a company should recognize revenue to show the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled to in exchange for those goods or services. In August 2015, FASB issued ASU <font style="WHITE-SPACE: nowrap">2015-14,</font> which deferred the effective date of the new revenue standard by one year. For Teradyne, the standard will be effective in the first quarter of 2018. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. Teradyne has selected a modified retrospective transition method. Teradyne is currently evaluating the impact of this ASU on its financial position and results of operations.</font></p> </div>
CY2016	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2016	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2016
CY2016	dei	Document Type DocumentType	10-K
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.21
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	-1.621	pure
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.027	pure
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.026	pure
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.158	pure
CY2016	dei	Entity Central Index Key EntityCentralIndexKey	0000097210
CY2016	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2016	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P6Y9M18D
CY2016	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.08
CY2016	us-gaap	Nature Of Operations NatureOfOperations	<div> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>A.    THE COMPANY</b></font></p> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 6px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">Teradyne, Inc. (“Teradyne”) is a leading global supplier of automation equipment for test and industrial applications. Teradyne designs, develops, manufactures and sells automatic test systems used to test semiconductors, wireless products, data storage and complex electronics systems in the consumer electronics, wireless, automotive, industrial, computing, communications, and aerospace and defense industries. Teradyne’s industrial automation products include collaborative robots used by global manufacturing and light industrial customers to improve quality, increase manufacturing efficiency and decrease manufacturing costs. Teradyne’s automatic test equipment and industrial automation products and services include:</font></p> <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px">  </p> <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0"> <tr style="PAGE-BREAK-INSIDE: avoid"> <td width="4%"><font size="1"> </font></td> <td valign="top" width="3%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">•</font></td> <td valign="top" width="1%"><font size="1"> </font></td> <td valign="top" align="left"> <p align="left"><font style="FONT-FAMILY: Times New Roman" size="2">semiconductor test (“Semiconductor Test”) systems;</font></p> </td> </tr> </table> <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px">  </p> <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0"> <tr style="PAGE-BREAK-INSIDE: avoid"> <td width="4%"><font size="1"> </font></td> <td valign="top" width="3%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">•</font></td> <td valign="top" width="1%"><font size="1"> </font></td> <td valign="top" align="left"> <p align="left"><font style="FONT-FAMILY: Times New Roman" size="2">defense/aerospace (“Defense/Aerospace”) test instrumentation and systems, storage test (“Storage Test”) systems, and circuit-board test and inspection (“Production Board Test”) systems (collectively these products represent “System Test”);</font></p> </td> </tr> </table> <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px">  </p> <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0"> <tr style="PAGE-BREAK-INSIDE: avoid"> <td width="4%"><font size="1"> </font></td> <td valign="top" width="3%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">•</font></td> <td valign="top" width="1%"><font size="1"> </font></td> <td valign="top" align="left"> <p align="left"><font style="FONT-FAMILY: Times New Roman" size="2">industrial automation (“Industrial Automation”) products; and</font></p> </td> </tr> </table> <p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 6px; MARGIN-TOP: 0px">  </p> <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" border="0"> <tr style="PAGE-BREAK-INSIDE: avoid"> <td width="4%"><font size="1"> </font></td> <td valign="top" width="3%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">•</font></td> <td valign="top" width="1%"><font size="1"> </font></td> <td valign="top" align="left"> <p align="left"><font style="FONT-FAMILY: Times New Roman" size="2">wireless test (“Wireless Test”) systems.</font></p> </td> </tr> </table> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%"> <font style="FONT-FAMILY: Times New Roman" size="2">On June 11, 2015, Teradyne acquired Universal Robots A/S (“Universal Robots”) for approximately $284 million of cash plus up to an additional $65 million of cash if certain performance targets are met extending through 2018. Universal Robots is the leading supplier of collaborative robots which are <font style="WHITE-SPACE: nowrap">low-cost,</font> <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">easy-to-deploy</font></font> and <font style="WHITE-SPACE: nowrap"><font style="WHITE-SPACE: nowrap">simple-to-program</font></font> robots that work side by side with production workers. Universal Robots is a separate operating and reportable segment, Industrial Automation.</font></p> </div>
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	445799000
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P7Y
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Number Of Shares Per Employee ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee	6000	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	2000	shares
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y10M24D
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	9.06
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	3.07
CY2016	dei	Trading Symbol TradingSymbol	TER
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	202578000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	202578000	shares
CY2016	dei	Amendment Flag AmendmentFlag	false
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.023	pure
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	233000	shares
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y2M12D
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	5.30
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Purchase Price Of Common Stock Percent SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent	0.85	pure
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	19.43
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.24
CY2016	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2016	us-gaap	Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage	0.25	pure
CY2016	dei	Document Period End Date DocumentPeriodEndDate	2016-12-31
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.21
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.023	pure
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	1.271	pure
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.060	pure
CY2016	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2016	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2016	us-gaap	Income Tax Holiday Termination Date IncomeTaxHolidayTerminationDate	December 31, 2020
CY2016	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	4	Segment
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	17.57
CY2016	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	18.68
CY2016	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	324000	shares
CY2016	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	19.87
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.211	pure
CY2016	dei	Entity Registrant Name EntityRegistrantName	TERADYNE, INC
CY2016	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2016	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y3M18D
CY2016	us-gaap	Extended Product Warranty Accrual Period Increase Decrease ExtendedProductWarrantyAccrualPeriodIncreaseDecrease	46800000
CY2016	us-gaap	Product Warranty Accrual Period Increase Decrease ProductWarrantyAccrualPeriodIncreaseDecrease	7200000
CY2016	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	17.21
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	130000	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1471000	shares
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P3Y10M24D
CY2016	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	5300000
CY2016	us-gaap	Unusual Or Infrequent Item Insurance Proceeds UnusualOrInfrequentItemInsuranceProceeds	5363000
CY2016	us-gaap	Revenues Revenues	1753250000
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	85272000
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	146331000
CY2016	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	100834000
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	9808000
CY2016	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-11125000
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	6198000
CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	8752000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	100836000
CY2016	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	1453248000
CY2016	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	300002000
CY2016	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-1354000
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2037000
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	34000
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	255000
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	-60015000
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-43421000
CY2016	us-gaap	Interest Paid InterestPaid	446000
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-34263000
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-18325000
CY2016	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	2000
CY2016	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	44000
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-55491000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	30745000
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	9766000
CY2016	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1656267000
CY2016	us-gaap	Payments Of Dividends PaymentsOfDividends	48619000
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1354000
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-13162000
CY2016	us-gaap	Investment Income Interest InvestmentIncomeInterest	9296000
CY2016	us-gaap	Income Tax Reconciliation Tax Holidays IncomeTaxReconciliationTaxHolidays	17000000
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	40424000
CY2016	us-gaap	Gross Profit GrossProfit	959567000
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	8000000
CY2016	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	6939000
CY2016	us-gaap	Extended Product Warranty Accrual Warranties Issued ExtendedProductWarrantyAccrualWarrantiesIssued	27182000
CY2016	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	3203000
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	187000
CY2016	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	411000
CY2016	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	14291000
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-704000
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	448000
CY2016	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-321000
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12070000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	285958000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-341018000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-55060000
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-8700000
CY2016	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	1600000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	6087000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	67852000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Subsequent Adjustments AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments	2017000
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	30750000
CY2016	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	500000
CY2016	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	15896000
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-51482000
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-62936000
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2214000
CY2016	us-gaap	Defined Benefit Plan Future Amortization Of Prior Service Cost Credit DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit	100000
CY2016	us-gaap	Depreciation Depreciation	64782000
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	120009000
CY2016	us-gaap	Dividends Cash DividendsCash	48639000
CY2016	us-gaap	Extended Product Warranty Accrual Payments ExtendedProductWarrantyAccrualPayments	26928000
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-11639000
CY2016	us-gaap	Increase Decrease In Deferred Revenue And Customer Advances And Deposits IncreaseDecreaseInDeferredRevenueAndCustomerAdvancesAndDeposits	-3634000
CY2016	us-gaap	Interest Expense InterestExpense	3637000
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-640462000
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	262000
CY2016	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	450800000
CY2016	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	20473000
CY2016	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	852794000
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	30750000
CY2016	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	4179000
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	2295000
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3532000
CY2016	us-gaap	Adjustment For Amortization AdjustmentForAmortization	55227000
CY2016	us-gaap	Advertising Expense AdvertisingExpense	6400000
CY2016	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	21998000
CY2016	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	688000
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	7750000
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	41579000
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	51297000
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	6198000
CY2016	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	100000
CY2016	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-6044000
CY2016	us-gaap	Inventory Write Down InventoryWriteDown	17493000
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-59000
CY2016	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	5051000
CY2016	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	945000
CY2016	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	291025000
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	315682000
CY2016	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	300000
CY2016	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	2000
CY2016	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	83339000
CY2016	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	18434000
CY2016	us-gaap	Interest Expense Debt InterestExpenseDebt	991000
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	237842000
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	18800000
CY2016	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-190000
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	683000
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	923000
CY2016	us-gaap	Other Restructuring Costs OtherRestructuringCosts	15900000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3729000
CY2016	us-gaap	Severance Costs1 SeveranceCosts1	2100000
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1960000
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	52648000
CY2016	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	2500000
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	43179000
CY2016	us-gaap	Cost Of Goods Sold CostOfGoodsSold	659097000
CY2016	us-gaap	Cost Of Revenue CostOfRevenue	793683000
CY2016	us-gaap	Cost Of Services CostOfServices	134586000
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1968000
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-9240000
CY2016	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	42000
CY2016	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	15000000
CY2016	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	254946000
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-1706000
CY2016	us-gaap	Operating Expenses OperatingExpenses	1019582000
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0
CY2016	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	12659000
CY2016	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	243232000
CY2016	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	67852000
CY2016	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	21942000
CY2016	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	146331000
CY2016	ter	Payment Of Contingent Consideration Financing PaymentOfContingentConsiderationFinancing	11697000
CY2016	ter	Deferred Income Tax Expense Benefit Net Of Adjustments DeferredIncomeTaxExpenseBenefitNetOfAdjustments	-62936000
CY2016	ter	Savings Plan Maximum Percentage Of Employees Contribution Allowable SavingsPlanMaximumPercentageOfEmployeesContributionAllowable	0.20	pure
CY2016	ter	Depreciation Period Over Life To Cost Of Revenues And Selling And Administrative Expenses DepreciationPeriodOverLifeToCostOfRevenuesAndSellingAndAdministrativeExpenses	P6Y
CY2016	ter	Warranty Period WarrantyPeriod	P1Y
CY2016	ter	Maximum Employment Period Considered For Vesting Of Employers Contribution MaximumEmploymentPeriodConsideredForVestingOfEmployersContribution	P4Y
CY2016	ter	Stock Issued During Period Value Share Based Compensation Net Of Shares Withheld For Taxes StockIssuedDuringPeriodValueShareBasedCompensationNetOfSharesWithheldForTaxes	10665000
CY2016	ter	Number Of Customer Accounted For Ten Percent Or Greater Revenue NumberOfCustomerAccountedForTenPercentOrGreaterRevenue	2	Customer
CY2016	ter	Book Value Of Internally Manufactured Test Systems Sold BookValueOfInternallyManufacturedTestSystemsSold	11400000
CY2016	ter	Maximum Shares Can Be Purchased Under Plan At Fair Market Value MaximumSharesCanBePurchasedUnderPlanAtFairMarketValue	25000
CY2016	ter	Contractual Interest Expense On Coupon ContractualInterestExpenseOnCoupon	303000
CY2016	ter	Increase Decrease In Prepaid Expense And Other Assets IncreaseDecreaseInPrepaidExpenseAndOtherAssets	18882000
CY2016	ter	Adjustments To Additional Paid In Capital Convertible Debt Hedges AdjustmentsToAdditionalPaidInCapitalConvertibleDebtHedges	100834000
CY2015Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.00
CY2015Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2015Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.00
CY2015Q4	us-gaap	Revenues Revenues	318444000
CY2015Q4	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-17700000
CY2015Q4	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	244510000
CY2015Q4	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	73934000
CY2015Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-9748000
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	-641000
CY2015Q4	us-gaap	Investment Income Interest InvestmentIncomeInterest	2017000
CY2015Q4	us-gaap	Gross Profit GrossProfit	166026000
CY2015Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-364000
CY2015Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-8857000
CY2015Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-8216000
CY2015Q4	us-gaap	Interest Expense InterestExpense	762000
CY2015Q4	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	70941000
CY2015Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	79718000
CY2015Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	19911000
CY2015Q4	us-gaap	Cost Of Goods Sold CostOfGoodsSold	120322000
CY2015Q4	us-gaap	Cost Of Revenue CostOfRevenue	152418000
CY2015Q4	us-gaap	Cost Of Services CostOfServices	32096000
CY2015Q4	us-gaap	Operating Expenses OperatingExpenses	175774000
CY2015Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	5204000
CY2015Q1	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	5400000
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2016Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2016Q4	us-gaap	Revenues Revenues	379989000
CY2016Q4	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	2000000
CY2016Q4	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	303667000
CY2016Q4	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	76322000
CY2016Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	59172000
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	66345000
CY2016Q4	us-gaap	Investment Income Interest InvestmentIncomeInterest	3095000
CY2016Q4	us-gaap	Gross Profit GrossProfit	219006000
CY2016Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1779000
CY2016Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	58884000
CY2016Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7461000
CY2016Q4	us-gaap	Interest Expense InterestExpense	1604000
CY2016Q4	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	70052000
CY2016Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	76289000
CY2016Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7923000
CY2016Q4	us-gaap	Cost Of Goods Sold CostOfGoodsSold	127481000
CY2016Q4	us-gaap	Cost Of Revenue CostOfRevenue	160983000
CY2016Q4	us-gaap	Cost Of Services CostOfServices	33502000
CY2016Q4	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2016Q4	us-gaap	Operating Expenses OperatingExpenses	159834000
CY2016Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	5570000
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2015Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2015Q3	us-gaap	Revenues Revenues	512739000
CY2015Q3	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	437243000
CY2015Q3	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	75496000
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	130790000
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	102879000
CY2015Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	1674000
CY2015Q3	us-gaap	Gross Profit GrossProfit	298568000
CY2015Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	116000
CY2015Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	132136000
CY2015Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29257000
CY2015Q3	us-gaap	Interest Expense InterestExpense	444000
CY2015Q3	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	75832000
CY2015Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	77073000
CY2015Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15258000
CY2015Q3	us-gaap	Cost Of Goods Sold CostOfGoodsSold	181491000
CY2015Q3	us-gaap	Cost Of Revenue CostOfRevenue	214171000
CY2015Q3	us-gaap	Cost Of Services CostOfServices	32680000
CY2015Q3	us-gaap	Operating Expenses OperatingExpenses	167778000
CY2015Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	-385000
CY2015Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
CY2015Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2015Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2015Q4	us-gaap	Revenues Revenues	465994000
CY2015Q4	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	386488000
CY2015Q4	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	79506000
CY2015Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	86804000
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	71453000
CY2015Q4	us-gaap	Investment Income Interest InvestmentIncomeInterest	1708000
CY2015Q4	us-gaap	Gross Profit GrossProfit	258626000
CY2015Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-596000
CY2015Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	87408000
CY2015Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15955000
CY2015Q4	us-gaap	Interest Expense InterestExpense	508000
CY2015Q4	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	74027000
CY2015Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	77481000
CY2015Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	20053000
CY2015Q4	us-gaap	Cost Of Goods Sold CostOfGoodsSold	170963000
CY2015Q4	us-gaap	Cost Of Revenue CostOfRevenue	207368000
CY2015Q4	us-gaap	Cost Of Services CostOfServices	36405000
CY2015Q4	us-gaap	Operating Expenses OperatingExpenses	171822000
CY2015Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	261000
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2016Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2016Q4	us-gaap	Revenues Revenues	410475000
CY2016Q4	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-700000
CY2016Q4	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	334610000
CY2016Q4	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	75865000
CY2016Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	56501000
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	63794000
CY2016Q4	us-gaap	Investment Income Interest InvestmentIncomeInterest	2892000
CY2016Q4	us-gaap	Gross Profit GrossProfit	227359000
CY2016Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	921000
CY2016Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	59681000
CY2016Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4113000
CY2016Q4	us-gaap	Interest Expense InterestExpense	633000
CY2016Q4	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	71400000
CY2016Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	78794000
CY2016Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8487000
CY2016Q4	us-gaap	Cost Of Goods Sold CostOfGoodsSold	148266000
CY2016Q4	us-gaap	Cost Of Revenue CostOfRevenue	183116000
CY2016Q4	us-gaap	Cost Of Services CostOfServices	34850000
CY2016Q4	us-gaap	Operating Expenses OperatingExpenses	170858000
CY2016Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	12177000
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.10
CY2016Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.10
CY2016Q3	us-gaap	Revenues Revenues	531792000
CY2016Q3	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	700000
CY2016Q3	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	456832000
CY2016Q3	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	74960000
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-231801000
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	-223546000
CY2016Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	1666000
CY2016Q3	us-gaap	Gross Profit GrossProfit	282870000
CY2016Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	9000
CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-230817000
CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7271000
CY2016Q3	us-gaap	Interest Expense InterestExpense	691000
CY2016Q3	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	76109000
CY2016Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	81425000
CY2016Q3	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	83339000
CY2016Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	16244000
CY2016Q3	us-gaap	Cost Of Goods Sold CostOfGoodsSold	215795000
CY2016Q3	us-gaap	Cost Of Revenue CostOfRevenue	248922000
CY2016Q3	us-gaap	Cost Of Services CostOfServices	33127000
CY2016Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	254946000
CY2016Q3	us-gaap	Operating Expenses OperatingExpenses	514671000
CY2016Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	2608000
CY2013Q4	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	34200000
CY2014Q4	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	98897000
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.24
CY2016Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.24
CY2016Q2	us-gaap	Revenues Revenues	430994000
CY2016Q2	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	1200000
CY2016Q2	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	358139000
CY2016Q2	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	72855000
CY2016Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	56113000
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	49986000
CY2016Q2	us-gaap	Investment Income Interest InvestmentIncomeInterest	1642000
CY2016Q2	us-gaap	Gross Profit GrossProfit	230332000
CY2016Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	147000
CY2016Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	57192000
CY2016Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7206000
CY2016Q2	us-gaap	Interest Expense InterestExpense	710000
CY2016Q2	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	73464000
CY2016Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	79174000
CY2016Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	19994000
CY2016Q2	us-gaap	Cost Of Goods Sold CostOfGoodsSold	167555000
CY2016Q2	us-gaap	Cost Of Revenue CostOfRevenue	200662000
CY2016Q2	us-gaap	Cost Of Services CostOfServices	33107000
CY2016Q2	us-gaap	Operating Expenses OperatingExpenses	174219000
CY2016Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	1587000
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2015Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.15
CY2015Q2	us-gaap	Revenues Revenues	342401000
CY2015Q2	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	272325000
CY2015Q2	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	70076000
CY2015Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	35124000
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	32787000
CY2015Q2	us-gaap	Investment Income Interest InvestmentIncomeInterest	1816000
CY2015Q2	us-gaap	Gross Profit GrossProfit	192423000
CY2015Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5660000
CY2015Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	42438000
CY2015Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9651000
CY2015Q2	us-gaap	Interest Expense InterestExpense	162000
CY2015Q2	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	71450000
CY2015Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	72041000
CY2015Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13808000
CY2015Q2	us-gaap	Cost Of Goods Sold CostOfGoodsSold	118996000
CY2015Q2	us-gaap	Cost Of Revenue CostOfRevenue	149978000
CY2015Q2	us-gaap	Cost Of Services CostOfServices	30982000
CY2015Q2	us-gaap	Operating Expenses OperatingExpenses	157299000

Files In Submission

Name	View Source	Status
0001193125-17-064638-index-headers.html	Edgar Link	pending
0001193125-17-064638-index.html	Edgar Link	pending
0001193125-17-064638.txt	Edgar Link	pending
0001193125-17-064638-xbrl.zip	Edgar Link	pending
d274101d10k.htm	Edgar Link	pending
d274101dex1010.htm	Edgar Link	pending
d274101dex1011.htm	Edgar Link	pending
d274101dex1012.htm	Edgar Link	pending
d274101dex1014.htm	Edgar Link	pending
d274101dex109.htm	Edgar Link	pending
d274101dex211.htm	Edgar Link	pending
d274101dex231.htm	Edgar Link	pending
d274101dex311.htm	Edgar Link	pending
d274101dex312.htm	Edgar Link	pending
d274101dex321.htm	Edgar Link	pending
d274101dex322.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
g274101g0223131302460.jpg	Edgar Link	pending
g274101g25n69.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R114.htm	Edgar Link	pending
R115.htm	Edgar Link	pending
R116.htm	Edgar Link	pending
R117.htm	Edgar Link	pending
R118.htm	Edgar Link	pending
R119.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R120.htm	Edgar Link	pending
R121.htm	Edgar Link	pending
R122.htm	Edgar Link	pending
R123.htm	Edgar Link	pending
R124.htm	Edgar Link	pending
R125.htm	Edgar Link	pending
R126.htm	Edgar Link	pending
R127.htm	Edgar Link	pending
R128.htm	Edgar Link	pending
R129.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R130.htm	Edgar Link	pending
R131.htm	Edgar Link	pending
R132.htm	Edgar Link	pending
R133.htm	Edgar Link	pending
R134.htm	Edgar Link	pending
R135.htm	Edgar Link	pending
R136.htm	Edgar Link	pending
R137.htm	Edgar Link	pending
R138.htm	Edgar Link	pending
R139.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R140.htm	Edgar Link	pending
R141.htm	Edgar Link	pending
R142.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
ter-20161231.xml	Edgar Link	completed
ter-20161231.xsd	Edgar Link	pending
ter-20161231_cal.xml	Edgar Link	unprocessable
ter-20161231_def.xml	Edgar Link	unprocessable
ter-20161231_lab.xml	Edgar Link	unprocessable
ter-20161231_pre.xml	Edgar Link	unprocessable

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$TER
TERADYNE, INC Stock $ter

2017 Q1 Form 10-K Financial Statement

#000119312517064638 Filed on March 01, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TER TERADYNE, INC Stock $ter

2017 Q1 Form 10-K Financial Statement

#000119312517064638 Filed on March 01, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TER
TERADYNE, INC Stock $ter