$CGNX
COGNEX CORP Stock $cgnx

$cgnx Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000085120520000002 Filed on February 13, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$169.8M	$169.8M	$232.2M
YoY Change	0.0%	-36.19%	30.4%
Cost Of Revenue	$44.90M	$52.80M	$58.86M
YoY Change	-14.96%	-22.42%	39.6%
Gross Profit	$124.9M	$124.9M	$135.7M
YoY Change	0.0%	-11.08%	-13.62%
Gross Profit Margin	73.57%	73.57%	58.43%
Selling, General & Admin	$74.30M	$66.40M	$65.82M
YoY Change	11.9%	8.76%	25.32%
% of Gross Profit	59.49%	53.16%	48.5%
Research & Development	$33.00M	$28.80M	$29.70M
YoY Change	14.58%	10.44%	27.05%
% of Gross Profit	26.42%	23.06%	21.89%
Depreciation & Amortization	$7.000M	$5.800M	$5.200M
YoY Change	20.69%	34.88%	30.0%
% of Gross Profit	5.6%	4.64%	3.83%
Operating Expenses	$107.3M	$95.20M	$95.52M
YoY Change	12.71%	9.26%	25.85%
Operating Profit	$17.61M	$17.61M	$43.09M
YoY Change	0.0%	-61.09%	-32.09%
Interest Expense	$5.300M	$3.600M	$3.400M
YoY Change	47.22%	56.52%	70.0%
% of Operating Profit	30.1%	20.45%	7.89%
Other Income/Expense, Net	$0.00	-$100.0K	-$129.0K
YoY Change	-100.0%	-77.53%	-23.67%
Pretax Income	$22.90M	$48.70M	$81.27M
YoY Change	-52.98%	-56.81%	31.5%
Income Tax	-$57.40M	-$7.700M	$837.0K
% Of Pretax Income	-250.66%	-15.81%	1.03%
Net Earnings	$80.33M	$80.33M	$41.69M
YoY Change	0.0%	76.86%	-25.82%
Net Earnings / Revenue	47.32%	47.32%	17.95%
Basic Earnings Per Share	$0.47	$0.47	$0.24
Diluted Earnings Per Share	$0.46	$0.46	$0.24
COMMON SHARES
Basic Shares Outstanding			172.2M shares
Diluted Shares Outstanding			177.2M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$411.9M	$535.6M	$527.4M
YoY Change	-23.09%	32.39%	28.42%
Cash & Equivalents	$171.4M	$108.2M	$107.4M
Short-Term Investments	$240.5M	$427.3M	$420.0M
Other Short-Term Assets	$26.90M	$34.00M	$47.40M
YoY Change	-20.88%	-12.37%	-5.39%
Inventory	$60.26M	$83.28M	$94.04M
Prepaid Expenses
Receivables	$103.4M	$119.2M	$135.4M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$607.2M	$780.3M	$798.5M
YoY Change	-22.18%	23.86%	37.23%
LONG-TERM ASSETS
Property, Plant & Equipment	$89.44M	$91.40M	$88.93M
YoY Change	-2.14%	17.1%	45.32%
Goodwill	$243.4M	$113.2M	$113.2M
YoY Change	115.04%	0.0%	-1.63%
Intangibles	$39.49M	$10.11M
YoY Change	290.49%
Long-Term Investments	$433.5M	$262.0M	$271.9M
YoY Change	65.46%	-32.21%	-23.34%
Other Assets	$5.833M	$3.925M	$3.873M
YoY Change	48.61%	57.57%	17.36%
Total Long-Term Assets	$1.279B	$509.3M	$526.2M
YoY Change	151.05%	-22.56%	-9.14%
TOTAL ASSETS
Total Short-Term Assets	$607.2M	$780.3M	$798.5M
Total Long-Term Assets	$1.279B	$509.3M	$526.2M
Total Assets	$1.886B	$1.290B	$1.325B
YoY Change	46.23%	0.15%	14.1%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$17.87M	$16.23M	$22.30M
YoY Change	10.08%	-30.83%	-2.28%
Accrued Expenses	$52.20M	$60.22M	$66.63M
YoY Change	-13.32%	-11.76%	56.34%
Deferred Revenue	$14.43M	$9.845M
YoY Change	46.59%	4.51%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$120.5M	$91.36M	$111.2M
YoY Change	31.87%	-18.89%	25.73%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$2.402M	$3.866M	$5.474M
YoY Change	-37.87%	-34.52%	-41.02%
Total Long-Term Liabilities	$2.402M	$3.866M	$5.474M
YoY Change	-37.87%	-34.52%	-41.02%
TOTAL LIABILITIES
Total Short-Term Liabilities	$120.5M	$91.36M	$111.2M
Total Long-Term Liabilities	$2.402M	$3.866M	$5.474M
Total Liabilities	$530.2M	$154.4M	$175.3M
YoY Change	243.4%	-19.61%	60.75%
SHAREHOLDERS EQUITY
Retained Earnings	$753.3M	$646.2M	$670.9M
YoY Change	16.57%	-3.35%	0.24%
Common Stock	$639.4M	$529.2M	$518.6M
YoY Change	20.82%	14.71%	21.9%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.356B	$1.135B	$1.149B
YoY Change
Total Liabilities & Shareholders Equity	$1.886B	$1.290B	$1.325B
YoY Change	46.23%	0.15%	14.1%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$80.33M	$80.33M	$41.69M
YoY Change	0.0%	76.86%	-25.82%
Depreciation, Depletion And Amortization	$7.000M	$5.800M	$5.200M
YoY Change	20.69%	34.88%	30.0%
Cash From Operating Activities	$67.70M	$71.80M	$17.80M
YoY Change	-5.71%	45.05%	-58.51%
INVESTING ACTIVITIES
Capital Expenditures	-$8.200M	-$9.700M	-$8.400M
YoY Change	-15.46%	24.36%	37.7%
Acquisitions
YoY Change
Other Investing Activities	-$34.20M	$7.200M	$68.60M
YoY Change	-575.0%	-81.54%	-341.55%
Cash From Investing Activities	-$42.30M	-$2.500M	$60.10M
YoY Change	1592.0%	-108.06%	-274.71%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	23.40M	-69.20M	-57.10M
YoY Change	-133.82%	89.07%	68.93%
NET CHANGE
Cash From Operating Activities	67.70M	71.80M	17.80M
Cash From Investing Activities	-42.30M	-2.500M	60.10M
Cash From Financing Activities	23.40M	-69.20M	-57.10M
Net Change In Cash	48.80M	100.0K	20.80M
YoY Change	48700.0%	-99.77%	-182.21%
FREE CASH FLOW
Cash From Operating Activities	$67.70M	$71.80M	$17.80M
Capital Expenditures	-$8.200M	-$9.700M	-$8.400M
Free Cash Flow	$75.90M	$81.50M	$26.20M
YoY Change	-6.87%	42.23%	-46.53%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2016Q4	cgnx	Employee Service Share Based Compensation Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2017Q4	cgnx	Employee Service Share Based Compensation Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2019Q4	cgnx	Employee Service Share Based Compensation Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2019	cgnx	Open Tax Year State Authorities OpenTaxYearStateAuthorities	2013 through 2016
CY2019	cgnx	Opentaxyear United States Internal Revenue Service OpentaxyearUnitedStatesInternalRevenueService	2013 through 2016
CY2019	cgnx	Opentaxyearvarioustaxingauthorities Opentaxyearvarioustaxingauthorities	2012 through 2016
CY2019	cgnx	Stateresearchandexperimentationtaxcarryforwards Stateresearchandexperimentationtaxcarryforwards	2014 through 2016
CY2018	cgnx	Tax Years Covered Through Advanced Pricing Agreement TaxYearsCoveredThroughAdvancedPricingAgreement	2006 through 2011
CY2019	cgnx	Taxyearsfor Ap Aagreement TaxyearsforAPAagreement	Between 2014 and 2018
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000851205
CY2018	us-gaap	Adjustment For Long Term Intercompany Transactions Net Of Tax AdjustmentForLongTermIntercompanyTransactionsNetOfTax	1271000	USD
CY2019	us-gaap	Adjustment For Long Term Intercompany Transactions Net Of Tax AdjustmentForLongTermIntercompanyTransactionsNetOfTax	1271000	USD
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.002
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.002
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	170820000	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	172440000	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	170820000	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	172440000	shares
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	Segment
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-5000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2018	us-gaap	Gross Profit GrossProfit	600286000	USD
CY2017	us-gaap	Gross Profit GrossProfit	578794000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	806338000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	2000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-188000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	515000	USD
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	400000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Property Subject To Or Available For Operating Lease Gross PropertySubjectToOrAvailableForOperatingLeaseGross	800000	USD
CY2017Q4	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	2
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1646000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1821000	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-34218
CY2019	dei	Entity Registrant Name EntityRegistrantName	COGNEX CORP
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MA
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2713778
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Vision Drive
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Natick
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	01760
CY2019	dei	City Area Code CityAreaCode	508
CY2019	dei	Local Phone Number LocalPhoneNumber	650-3000
CY2019	dei	Security12b Title Security12bTitle	Common Stock, par value $.002 per share
CY2019	dei	Trading Symbol TradingSymbol	CGNX
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	7800874313	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	172611232	shares
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	725625000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	766083000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	273842000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	189754000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	220728000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	206052000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	187289000	USD
CY2019	us-gaap	Gross Profit GrossProfit	535871000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	142602000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	221142000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	119427000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	116445000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	99205000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	262699000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	162994000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	234574000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	266464000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-40871000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	258861000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-509000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1064000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1601000	USD
CY2019	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	19689000	USD
CY2018	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	14715000	USD
CY2017	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	9542000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1212000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-219000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-338000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15307000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	89752000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	203865000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	219267000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	176712000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.27
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.16
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.24
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.98
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171194000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172333000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	173287000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175269000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	177406000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	179551000	shares
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.2050
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1850
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1675
CY2019	us-gaap	Net Income Loss NetIncomeLoss	203865000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	219267000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	176712000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	4000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	41000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-37000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	5219000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1185000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	829000	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	3767000	USD
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-1686000	USD
CY2017	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-126000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-541000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4216000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	21992000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-541000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	703000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	1452000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	501000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4216000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	21992000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3226000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-5902000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	21829000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	207091000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	213365000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	198541000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	171431000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	108212000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	240470000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	427348000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	103447000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	119172000	USD
CY2019Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	4782000	USD
CY2018Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	8312000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	60261000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	83282000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	26840000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	34000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	607231000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	780326000	USD
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	433452000	USD
CY2018Q4	us-gaap	Long Term Investments LongTermInvestments	262039000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	89443000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	91396000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	17522000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2019Q4	us-gaap	Goodwill Goodwill	243445000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	113208000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	39490000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	10113000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	449519000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	28660000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	5833000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3925000	USD
CY2019Q4	us-gaap	Assets Assets	1885935000	USD
CY2018Q4	us-gaap	Assets Assets	1289667000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	17866000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	16230000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	52199000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	60220000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	30333000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	5062000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	14432000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	9845000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5647000	USD
CY2018Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	0	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	120477000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	91357000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12326000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	0	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	332344000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	962000	USD
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	11563000	USD
CY2018Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	7106000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	51113000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	51113000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2402000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3866000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	530225000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	154404000	USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2018Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2019Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	345000	USD
CY2018Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	342000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	639372000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	529208000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	176712000	USD
CY2019	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	45589000	USD
CY2018	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	41090000	USD
CY2017	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	31942000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	753268000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	646214000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-37275000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-40501000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1355710000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1135263000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1885935000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1289667000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	203865000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	219267000	USD
CY2019	us-gaap	Depreciation Depreciation	21527000	USD
CY2018	us-gaap	Depreciation Depreciation	18473000	USD
CY2017	us-gaap	Depreciation Depreciation	13683000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3373000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3076000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3308000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	469000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	618000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-108000	USD
CY2017	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-205000	USD
CY2019	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	1452000	USD
CY2018	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	501000	USD
CY2017	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	829000	USD
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-1401000	USD
CY2018	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-3000	USD
CY2017	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-28000	USD
CY2019	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	94866000	USD
CY2018	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	413000	USD
CY2017	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-1787000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-16807000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1867000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	55185000	USD
CY2019	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-3530000	USD
CY2018	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	906000	USD
CY2017	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	4604000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-23137000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-8938000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	380000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	14476000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	25266000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	16946000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	37088000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-7405000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	9750000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	7016000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1633000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-7247000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	12322000	USD
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-21903000	USD
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	71335000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue And Customer Advances And Deposits IncreaseDecreaseInDeferredRevenueAndCustomerAdvancesAndDeposits	3875000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue And Customer Advances And Deposits IncreaseDecreaseInDeferredRevenueAndCustomerAdvancesAndDeposits	1434000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue And Customer Advances And Deposits IncreaseDecreaseInDeferredRevenueAndCustomerAdvancesAndDeposits	1619000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-4493000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	838000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-1215000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	253225000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	223454000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	224323000	USD
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1031642000	USD
CY2018	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	782032000	USD
CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	636856000	USD
CY2019	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	1062962000	USD
CY2018	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	812565000	USD
CY2017	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	584464000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	21745000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	37095000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	28754000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	166911000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	4265000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	24118000	USD
CY2019	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	0	USD
CY2018	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	0	USD
CY2017	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	291000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-157336000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-10827000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-105555000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	64581000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	26783000	USD
CY2017	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	54557000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	61690000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	203822000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	123715000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	35124000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	31865000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29037000	USD
CY2019	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	0	USD
CY2018	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	1000000	USD
CY2017	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	1926000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-32233000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-209904000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-100121000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-437000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1093000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	8294000	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	63219000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	1630000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	26941000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	108212000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	106582000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	79641000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	171431000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	108212000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	106582000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	963385000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	54557000	USD
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	123715000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	31942000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29037000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	176712000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	4000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	41000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	703000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	829000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	21992000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1095673000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	26783000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	203822000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	41090000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	31865000	USD
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-5961000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	219267000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1185000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	501000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4216000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1135263000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	64581000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	61690000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	45589000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	35124000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	203865000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	5219000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	1452000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-541000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1355710000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-bottom:6px;padding-top:12px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;text-decoration:underline;">Use of Estimates in the Preparation of Financial Statements</span></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities as of the balance sheet date, and the reported amounts of revenues and expenses during the year. Actual results could differ from those estimates. Significant estimates and judgments include those related to revenue recognition, investments, accounts receivable, inventories, leases, long-lived assets, internal-use software, goodwill, warranty obligations, contingencies, derivative instruments, stock-based compensation, income taxes, and business combinations.</span></div>
CY2019	cgnx	Availableforsale Securities Debt Maturities Effective Term Maximum AvailableforsaleSecuritiesDebtMaturitiesEffectiveTermMaximum	P10Y
CY2019	cgnx	Maximum Investment Of Company In Partnership MaximumInvestmentOfCompanyInPartnership	0.05
CY2019	us-gaap	Advertising Expense AdvertisingExpense	1385000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	1662000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	1679000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	38027000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	37486000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	2023000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1744000	USD
CY2019	us-gaap	Adjustment For Long Term Intercompany Transactions Net Of Tax AdjustmentForLongTermIntercompanyTransactionsNetOfTax	1271000	USD
CY2017Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	3557000	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	2554000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1153000	USD
CY2018Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	3557000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	171431000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1153000	USD
CY2017	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	469000	USD
CY2019Q4	us-gaap	Cash Cash	155498000	USD
CY2018Q4	us-gaap	Cash Cash	104655000	USD
CY2019Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	15933000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	108212000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	240470000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	427348000	USD
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	433452000	USD
CY2018Q4	us-gaap	Long Term Investments LongTermInvestments	262039000	USD
CY2019Q4	cgnx	Cash Cash Equivalents Short Term And Long Term Investments CashCashEquivalentsShortTermAndLongTermInvestments	845353000	USD
CY2018Q4	cgnx	Cash Cash Equivalents Short Term And Long Term Investments CashCashEquivalentsShortTermAndLongTermInvestments	797599000	USD
CY2019Q4	cgnx	Due From Foreign Banks DueFromForeignBanks	123499000	USD
CY2018Q4	cgnx	Due From Foreign Banks DueFromForeignBanks	67502000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	667243000	USD
CY2019Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2416000	USD
CY2019Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	65000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	669594000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	60547000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	39000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	19019000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	26000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	79566000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	65000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	1581000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	669000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	929000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	129000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	168000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	100000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	236142000	USD
CY2019Q4	cgnx	Available For Sale Securities Debt Maturities After One Year Before Two Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearBeforeTwoYearsFairValue	312021000	USD
CY2019Q4	cgnx	Available For Sale Securities Debt Maturities After Two Years Before Three Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTwoYearsBeforeThreeYearsFairValue	112628000	USD
CY2019Q4	cgnx	Available For Sale Securities Debt Maturities After Three Years Before Four Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsBeforeFourYearsFairValue	7656000	USD
CY2019Q4	cgnx	Available For Sale Securities Debt Maturities After Four Years Before Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFourYearsBeforeFiveYearsFairValue	1147000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	669594000	USD
CY2019Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	27285000	USD
CY2018Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	42738000	USD
CY2019Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	5503000	USD
CY2018Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	3435000	USD
CY2019Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	27473000	USD
CY2018Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	37109000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	60261000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	83282000	USD
CY2018	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	1116000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	17973000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.046
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y8M12D
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	311000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	183470000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	194115000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	104672000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	92074000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	89443000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	91396000	USD
CY2019	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	8883000	USD
CY2018	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	6367000	USD
CY2019	us-gaap	Accumulated Depreciation Depletion And Amortization Sale Of Property Plant And Equipment1 AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1	8559000	USD
CY2018	us-gaap	Accumulated Depreciation Depletion And Amortization Sale Of Property Plant And Equipment1 AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1	6367000	USD
CY2019Q4	us-gaap	Property Subject To Or Available For Operating Lease Gross PropertySubjectToOrAvailableForOperatingLeaseGross	800000	USD
CY2019Q4	us-gaap	Property Subject To Or Available For Operating Lease Accumulated Depreciation PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation	255000	USD
CY2018Q4	us-gaap	Property Subject To Or Available For Operating Lease Accumulated Depreciation PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation	234000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	6893000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	6530000	USD
CY2019	cgnx	Operating Lease Expense No Liability Or Asset Recognized OperatingLeaseExpenseNoLiabilityOrAssetRecognized	275000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	8186000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	6738000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6565000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5558000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3822000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	927000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	310000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	20182000	USD
CY2017	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	1474000	USD
CY2019Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	307000	USD
CY2019Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	307000	USD
CY2019Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	307000	USD
CY2019Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	921000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	113208000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	113208000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	95000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	243445000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	93474000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	53984000	USD
CY2019Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	39490000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	60724000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	50611000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	10113000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	5412000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	5232000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	4862000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	4160000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	3593000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	8031000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	31290000	USD
CY2019Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	11500000	USD
CY2018Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	11039000	USD
CY2019Q4	cgnx	Retirement Allowance RetirementAllowance	6146000	USD
CY2018Q4	cgnx	Retirement Allowance RetirementAllowance	4816000	USD
CY2019Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	4713000	USD
CY2018Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	4743000	USD
CY2019Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	4708000	USD
CY2018Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	6507000	USD
CY2019Q4	us-gaap	Business Combination Separately Recognized Transactions Liabilities Recognized BusinessCombinationSeparatelyRecognizedTransactionsLiabilitiesRecognized	2103000	USD
CY2018Q4	us-gaap	Business Combination Separately Recognized Transactions Liabilities Recognized BusinessCombinationSeparatelyRecognizedTransactionsLiabilitiesRecognized	1706000	USD
CY2019Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	0	USD
CY2018Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	9134000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	23029000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	22275000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	52199000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	60220000	USD
CY2017Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	4701000	USD
CY2018	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	4184000	USD
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	4024000	USD
CY2018	us-gaap	Standard And Extended Product Warranty Accrual Foreign Currency Translation Gain Loss StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss	-118000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	4743000	USD
CY2019	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	3841000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	3871000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	4713000	USD
CY2019Q4	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	7707000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	857000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	23000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	106000	USD
CY2019Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	0	USD
CY2018Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	0	USD
CY2019Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	857000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	1000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	23000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	106000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	725625000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	806338000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	725625000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	806338000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	766083000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	766083000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	3963000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	3514000	USD
CY2017Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	9420000	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	63231000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	61819000	USD
CY2018	cgnx	Contract Liability Foreign Exchange Rate Changes ContractLiabilityForeignExchangeRateChanges	-987000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	9845000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	53422000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	48730000	USD
CY2019	cgnx	Contract Liability Foreign Exchange Rate Changes ContractLiabilityForeignExchangeRateChanges	-105000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	14432000	USD
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	400000	shares
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2016Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2018Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2016Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000	shares
CY2017Q4	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	2
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.002
CY2019Q4	cgnx	Vote Entitled For Each Common Share Outstanding VoteEntitledForEachCommonShareOutstanding	1	Vote
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	203822000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.045
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.050
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.055
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	35124000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	31865000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	13789000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	31.73
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	2990000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	51.25
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3018000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	21.40
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	862000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	42.53
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	12899000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	37.95
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y1M20D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	236318000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4775000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	26.67
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y7M9D
CY2019Q4	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAggregateIntrinsicValue	141277000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	11724000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	36.84
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P7Y
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	227779000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	18.62
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	20.84
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	15.59
CY2019	cgnx	Shares Based Compensation Arrangement By Shares Based Payment Award Options Exercisable Intrinsic Value SharesBasedCompensationArrangementBySharesBasedPaymentAwardOptionsExercisableIntrinsicValue	90762000	USD
CY2018	cgnx	Shares Based Compensation Arrangement By Shares Based Payment Award Options Exercisable Intrinsic Value SharesBasedCompensationArrangementBySharesBasedPaymentAwardOptionsExercisableIntrinsicValue	52629000	USD
CY2017	cgnx	Shares Based Compensation Arrangement By Shares Based Payment Award Options Exercisable Intrinsic Value SharesBasedCompensationArrangementBySharesBasedPaymentAwardOptionsExercisableIntrinsicValue	136672000	USD
CY2019	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Vested Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedFairValue	38974000	USD
CY2018	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Vested Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedFairValue	31106000	USD
CY2017	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Vested Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedFairValue	21519000	USD
CY2019Q4	cgnx	Number Of Groups Within Employee Population NumberOfGroupsWithinEmployeePopulation	2	group
CY2019Q4	cgnx	Estimated Forfeiture Rate For Unvested Options For Senior Management EstimatedForfeitureRateForUnvestedOptionsForSeniorManagement	0.09
CY2019Q4	cgnx	Estimated Forfeiture Rate For Unvested Options For All Non Senior Management EstimatedForfeitureRateForUnvestedOptionsForAllNonSeniorManagement	0.12
CY2019	cgnx	Increase In Compensation Expense Due To Revised Estimated Forfeiture Rates IncreaseInCompensationExpenseDueToRevisedEstimatedForfeitureRates	499000	USD
CY2018	cgnx	Increase In Compensation Expense Due To Revised Estimated Forfeiture Rates IncreaseInCompensationExpenseDueToRevisedEstimatedForfeitureRates	1283000	USD
CY2017	cgnx	Increase In Compensation Expense Due To Revised Estimated Forfeiture Rates IncreaseInCompensationExpenseDueToRevisedEstimatedForfeitureRates	673000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	53491000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M28D
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	45589000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	7756000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	41090000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	7317000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	31942000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10473000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	45589000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	41090000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	31942000	USD
CY2019	cgnx	Minimum Age To Be Eligible To Defined Contribution Plan MinimumAgeToBeEligibleToDefinedContributionPlan	P21Y
CY2019	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	100
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2019	cgnx	Company Contributions Vest At End Of Two Year CompanyContributionsVestAtEndOfTwoYear	0.25
CY2019	cgnx	Company Contributions Vest At End Of Three Years CompanyContributionsVestAtEndOfThreeYears	0.50
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	359000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	30345000	USD
CY2019	cgnx	Company Contributions Vest At End Of Four Years CompanyContributionsVestAtEndOfFourYears	0.75
CY2019	cgnx	Company Contributions Vest At End Of Five Years CompanyContributionsVestAtEndOfFiveYears	1
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2729000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2540000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2030000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	31396000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	39042000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	131598000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	195532000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	236119000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15854000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	10624000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	78152000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2108000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-879000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2687000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	30670000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6307000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	7624000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	48632000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	16052000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	88463000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	352808000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1271000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1569000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	183000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	554000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-639000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-442494000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-28000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.25
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.02
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-89503000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-745000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1289000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-40871000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15307000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	89752000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.09
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.09
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.27
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.01
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.01
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.04
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.04
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.14
CY2019	cgnx	Effective Income Tax Rate Reconciliation Discrete Tax Expense Tax And Jobs Act Percent EffectiveIncomeTaxRateReconciliationDiscreteTaxExpenseTaxAndJobsActPercent	0
CY2018	cgnx	Effective Income Tax Rate Reconciliation Discrete Tax Expense Tax And Jobs Act Percent EffectiveIncomeTaxRateReconciliationDiscreteTaxExpenseTaxAndJobsActPercent	-0.03
CY2017	cgnx	Effective Income Tax Rate Reconciliation Discrete Tax Expense Tax And Jobs Act Percent EffectiveIncomeTaxRateReconciliationDiscreteTaxExpenseTaxAndJobsActPercent	0.36
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.05
CY2019	cgnx	Effective Income Tax Rate Reconciliation Migrationof Acquired Intellectual Property EffectiveIncomeTaxRateReconciliationMigrationofAcquiredIntellectualProperty	0.18
CY2018	cgnx	Effective Income Tax Rate Reconciliation Migrationof Acquired Intellectual Property EffectiveIncomeTaxRateReconciliationMigrationofAcquiredIntellectualProperty	0
CY2017	cgnx	Effective Income Tax Rate Reconciliation Migrationof Acquired Intellectual Property EffectiveIncomeTaxRateReconciliationMigrationofAcquiredIntellectualProperty	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-2.68
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2019	cgnx	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act Global Intangible Low Tax Income Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActGlobalIntangibleLowTaxIncomePercent	2.14
CY2018	cgnx	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act Global Intangible Low Tax Income Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActGlobalIntangibleLowTaxIncomePercent	0
CY2017	cgnx	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act Global Intangible Low Tax Income Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActGlobalIntangibleLowTaxIncomePercent	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.01
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.01
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.03
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.01
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.01
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.07
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.34
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	162994000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-40871000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	203865000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.16
CY2019Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	449519000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	332344000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	753268000	USD
CY2019Q4	cgnx	Deferred Tax Assets Foreign Tax Structure Change DeferredTaxAssetsForeignTaxStructureChange	437500000	USD
CY2019Q4	cgnx	Deferred Tax Liabilities Tax Cuts And Jobs Act Global Intangible Low Tax Income DeferredTaxLiabilitiesTaxCutsAndJobsActGlobalIntangibleLowTaxIncome	350000000	USD
CY2019Q4	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	87500000	USD
CY2018	cgnx	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense	12523000	USD
CY2019	cgnx	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense	3240000	USD
CY2017	cgnx	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense	101379000	USD
CY2018	cgnx	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense	11028000	USD
CY2018Q4	cgnx	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Liability TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsLiability	90351000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	6472000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	8488000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	38569000	USD
CY2019	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	1932000	USD
CY2018	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	1847000	USD
CY2017	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	2502000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	116000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	91000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	71000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	6749000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	69000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1499000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1023000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7294000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	199000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5259000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1161000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	11591000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	12591000	USD
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	11563000	USD
CY2019Q4	cgnx	Unrecognizedtaxbenefitshownasareductiontononcurrentdeferredtaxassets Unrecognizedtaxbenefitshownasareductiontononcurrentdeferredtaxassets	1028000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	8134000	USD
CY2018Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	7106000	USD
CY2018Q4	cgnx	Unrecognizedtaxbenefitshownasareductiontononcurrentdeferredtaxassets Unrecognizedtaxbenefitshownasareductiontononcurrentdeferredtaxassets	1028000	USD
CY2019Q4	cgnx	Deferred Tax Assets Intangible Asset Changein Tax Structure DeferredTaxAssetsIntangibleAssetChangeinTaxStructure	437500000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	840000	USD
CY2019	cgnx	Minimum Decrease In Income Tax Expense Due To Release In Reserves MinimumDecreaseInIncomeTaxExpenseDueToReleaseInReserves	1300000	USD
CY2019	cgnx	Maximum Decrease In Income Tax Expense Due To Release In Reserves MaximumDecreaseInIncomeTaxExpenseDueToReleaseInReserves	1400000	USD
CY2018Q4	cgnx	Deferred Tax Assets Intangible Asset Changein Tax Structure DeferredTaxAssetsIntangibleAssetChangeinTaxStructure	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	15042000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	13818000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	8491000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	7395000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	4286000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	0	USD
CY2019Q4	cgnx	Noncurrent Deferred Tax Assets Deprecation NoncurrentDeferredTaxAssetsDeprecation	3522000	USD
CY2018Q4	cgnx	Noncurrent Deferred Tax Assets Deprecation NoncurrentDeferredTaxAssetsDeprecation	2475000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	2934000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	3233000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	1609000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	5470000	USD
CY2019Q4	cgnx	Deferred Tax Assets Other Noncurrent DeferredTaxAssetsOtherNoncurrent	3550000	USD
CY2018Q4	cgnx	Deferred Tax Assets Other Noncurrent DeferredTaxAssetsOtherNoncurrent	2425000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	476934000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	34816000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance Noncurrent DeferredTaxAssetsValuationAllowanceNoncurrent	7312000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance Noncurrent DeferredTaxAssetsValuationAllowanceNoncurrent	6112000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	469622000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	28704000	USD
CY2019Q4	cgnx	Deferred Tax Liabilities Tax Cuts And Jobs Act Global Intangible Low Tax Income DeferredTaxLiabilitiesTaxCutsAndJobsActGlobalIntangibleLowTaxIncome	350000000	USD
CY2018Q4	cgnx	Deferred Tax Liabilities Tax Cuts And Jobs Act Global Intangible Low Tax Income DeferredTaxLiabilitiesTaxCutsAndJobsActGlobalIntangibleLowTaxIncome	0	USD
CY2019Q4	cgnx	Deferred Tax Liabilities Tax Cuts And Jobs Act Other Global Intangible Low Tax Income DeferredTaxLiabilitiesTaxCutsAndJobsActOtherGlobalIntangibleLowTaxIncome	2446000	USD
CY2018Q4	cgnx	Deferred Tax Liabilities Tax Cuts And Jobs Act Other Global Intangible Low Tax Income DeferredTaxLiabilitiesTaxCutsAndJobsActOtherGlobalIntangibleLowTaxIncome	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	44000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	962000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Gross Current DeferredTaxLiabilitiesGrossCurrent	352446000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Gross Current DeferredTaxLiabilitiesGrossCurrent	1006000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13443000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	41430000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	11802000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171194000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172333000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	173287000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	4075000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	5073000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	6264000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175269000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	177406000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	179551000	shares
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	Segment
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	725625000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	95276000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	806338000	USD
CY2018Q4	us-gaap	Noncurrent Assets NoncurrentAssets	95321000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	766083000	USD
CY2017Q4	us-gaap	Noncurrent Assets NoncurrentAssets	80539000	USD
CY2019	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	1	acquisition
CY2017	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	2	acquisition
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	173484000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	199047000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	183325000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	169769000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	127200000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	148080000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	135693000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	124898000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	30147000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	51756000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	43092000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	17607000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	33104000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	48749000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	41685000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	80327000	USD
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.24
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.24
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2017Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	169567000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	211264000	USD
CY2017Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	232221000	USD
CY2017Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	193286000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	129369000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	157095000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	173361000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	140461000	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	34596000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	63455000	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	77844000	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	45247000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	37217000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	56196000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	80436000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	45418000	USD
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26

Files In Submission

Name	View Source	Status
0000851205-20-000002-index-headers.html	Edgar Link	pending
0000851205-20-000002-index.html	Edgar Link	pending
0000851205-20-000002.txt	Edgar Link	pending
0000851205-20-000002-xbrl.zip	Edgar Link	pending
cgnx-20191231.xsd	Edgar Link	pending
cgnx-20191231x10xk.htm	Edgar Link	pending
cgnx-20191231x10xk_htm.xml	Edgar Link	completed
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$CGNX
COGNEX CORP Stock $cgnx

2019 Q4 Form 10-K Financial Statement

#000085120520000002 Filed on February 13, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CGNX COGNEX CORP Stock $cgnx

2019 Q4 Form 10-K Financial Statement

#000085120520000002 Filed on February 13, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CGNX
COGNEX CORP Stock $cgnx