$CGNX
COGNEX CORP Stock $cgnx

$cgnx Overview Financials Valuation SEC Filings Company Website

2020 Q2 Form 10-Q Financial Statement

#000085120520000011 Filed on July 29, 2020

Income Statement

Concept	2020 Q2	2019 Q2	2019 Q1
Revenue	$169.1M	$199.0M	$173.5M
YoY Change	-15.05%	17.39%
Cost Of Revenue	$50.32M	$50.97M	$46.28M
YoY Change	-1.27%	26.79%
Gross Profit	$118.8M	$148.1M	$127.2M
YoY Change	-19.79%	16.42%
Gross Profit Margin	70.24%	74.39%	73.32%
Selling, General & Admin	$60.15M	$68.25M	$66.81M
YoY Change	-11.86%	7.14%
% of Gross Profit	50.64%	46.09%	52.52%
Research & Development	$30.40M	$28.08M	$30.24M
YoY Change	8.26%	-9.64%
% of Gross Profit	25.59%	18.96%	23.78%
Depreciation & Amortization	$6.800M	$6.000M	$5.175M
YoY Change	13.33%	35.44%
% of Gross Profit	5.73%	4.05%	4.07%
Operating Expenses	$90.55M	$96.32M	$97.05M
YoY Change	-5.99%	1.64%
Operating Profit	-$6.142M	$51.76M	$30.15M
YoY Change	-111.87%	71.68%
Interest Expense	$3.600M	$5.400M	$4.700M
YoY Change	-33.33%	74.19%
% of Operating Profit		10.43%	15.59%
Other Income/Expense, Net	$203.0K	-$144.0K	$927.0K
YoY Change	-240.97%	-151.99%
Pretax Income	-$2.312M	$56.98M	$35.73M
YoY Change	-104.06%	50.02%
Income Tax	-$1.170M	$8.226M	$2.627M
% Of Pretax Income		14.44%	7.35%
Net Earnings	-$1.142M	$48.75M	$33.10M
YoY Change	-102.34%	47.26%
Net Earnings / Revenue	-0.68%	24.49%	19.08%
Basic Earnings Per Share	-$0.01	$0.28	$0.19
Diluted Earnings Per Share	-$0.01	$0.28	$0.19
COMMON SHARES
Basic Shares Outstanding	172.3M shares	171.3M shares	171.1M shares
Diluted Shares Outstanding	172.3M shares	175.4M shares	175.6M shares

Balance Sheet

Concept	2020 Q2	2019 Q2	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$429.1M	$453.6M	$546.6M
YoY Change	-5.4%	1.43%
Cash & Equivalents	$286.0M	$89.10M	$105.3M
Short-Term Investments	$143.1M	$364.5M	$441.3M
Other Short-Term Assets	$49.80M	$34.40M	$30.70M
YoY Change	44.77%	31.8%
Inventory	$52.95M	$72.89M	$79.21M
Prepaid Expenses
Receivables	$111.7M	$107.6M	$106.4M
Other Receivables	$2.000M	$0.00	$0.00
Total Short-Term Assets	$646.5M	$678.9M	$773.2M
YoY Change	-4.77%	1.24%
LONG-TERM ASSETS
Property, Plant & Equipment	$83.94M	$89.34M	$91.27M
YoY Change	-6.05%	4.86%
Goodwill	$242.4M	$113.2M	$113.2M
YoY Change	114.15%	0.0%
Intangibles
YoY Change
Long-Term Investments	$467.1M	$408.0M	$317.1M
YoY Change	14.49%	14.54%
Other Assets	$8.042M	$5.424M	$3.698M
YoY Change	48.27%	144.65%
Total Long-Term Assets	$1.288B	$671.0M	$580.5M
YoY Change	92.0%	12.15%
TOTAL ASSETS
Total Short-Term Assets	$646.5M	$678.9M	$773.2M
Total Long-Term Assets	$1.288B	$671.0M	$580.5M
Total Assets	$1.935B	$1.350B	$1.354B
YoY Change	43.33%	6.38%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$18.00M	$11.73M	$20.53M
YoY Change	53.46%	-59.74%
Accrued Expenses	$66.26M	$48.71M	$48.95M
YoY Change	36.04%	-13.73%
Deferred Revenue	$46.74M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$144.6M	$85.68M	$93.05M
YoY Change	68.74%	-24.19%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$5.085M	$1.244M	$1.054M
YoY Change	308.76%	-73.97%
Total Long-Term Liabilities	$5.085M	$1.244M	$1.054M
YoY Change	308.76%	-73.97%
TOTAL LIABILITIES
Total Short-Term Liabilities	$144.6M	$85.68M	$93.05M
Total Long-Term Liabilities	$5.085M	$1.244M	$1.054M
Total Liabilities	$558.4M	$158.3M	$164.9M
YoY Change	252.78%	-17.48%
SHAREHOLDERS EQUITY
Retained Earnings	$702.6M	$649.2M	$670.8M
YoY Change	8.22%	4.24%
Common Stock	$710.4M	$578.9M	$555.8M
YoY Change	22.72%	19.19%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.376B	$1.192B	$1.189B
YoY Change
Total Liabilities & Shareholders Equity	$1.935B	$1.350B	$1.354B
YoY Change	43.33%	6.38%

Cashflow Statement

Concept	2020 Q2	2019 Q2	2019 Q1
OPERATING ACTIVITIES
Net Income	-$1.142M	$48.75M	$33.10M
YoY Change	-102.34%	47.26%
Depreciation, Depletion And Amortization	$6.800M	$6.000M	$5.175M
YoY Change	13.33%	35.44%
Cash From Operating Activities	$17.00M	$58.90M	$61.26M
YoY Change	-71.14%	7.51%
INVESTING ACTIVITIES
Capital Expenditures	-$3.900M	-$3.900M	$5.078M
YoY Change	0.0%	-129.39%
Acquisitions
YoY Change
Other Investing Activities	$7.600M	-$12.70M	-$65.00M
YoY Change	-159.84%	-148.47%
Cash From Investing Activities	$3.700M	-$16.60M	-$70.10M
YoY Change	-122.29%	-228.1%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	27.80M	-58.20M	$5.782M
YoY Change	-147.77%	-11.64%
NET CHANGE
Cash From Operating Activities	17.00M	58.90M	$61.26M
Cash From Investing Activities	3.700M	-16.60M	-$70.10M
Cash From Financing Activities	27.80M	-58.20M	$5.782M
Net Change In Cash	48.50M	-15.90M	-$2.916M
YoY Change	-405.03%	-946.19%
FREE CASH FLOW
Cash From Operating Activities	$17.00M	$58.90M	$61.26M
Capital Expenditures	-$3.900M	-$3.900M	$5.078M
Free Cash Flow	$20.90M	$62.80M	$56.18M
YoY Change	-66.72%	51.27%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0000851205
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Amendment Flag AmendmentFlag	false
CY2020Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	173047292	shares
CY2020Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1788000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	507000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2020Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-836000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	239000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2019Q2	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2020Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2235000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1821000	USD
CY2020Q2	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
CY2020Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2020Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	173047000	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	172440000	shares
CY2020Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-836000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	239000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1788000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	507000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	0	shares
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-34218
	dei	Entity Registrant Name EntityRegistrantName	COGNEX CORP
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2713778
	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Vision Drive
	dei	Entity Address City Or Town EntityAddressCityOrTown	Natick
	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	01760
	dei	City Area Code CityAreaCode	508
	dei	Local Phone Number LocalPhoneNumber	650-3000
	dei	Security12b Title Security12bTitle	Common Stock, par value $.002 per share
	dei	Trading Symbol TradingSymbol	CGNX
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
	dei	Document Period End Date DocumentPeriodEndDate	2020-06-28
CY2020Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	173047292	shares
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	169097000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	199047000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	336332000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	372531000	USD
CY2020Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	50320000	USD
CY2019Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	50967000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	91520000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	97251000	USD
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CY2019Q2	us-gaap	Gross Profit GrossProfit	148080000	USD
	us-gaap	Gross Profit GrossProfit	244812000	USD
	us-gaap	Gross Profit GrossProfit	275280000	USD
CY2020Q2	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	30397000	USD
CY2019Q2	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	28079000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	66343000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	58321000	USD
CY2020Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	60153000	USD
CY2019Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	68245000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	129291000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	135056000	USD
CY2020Q2	us-gaap	Restructuring Charges RestructuringCharges	14798000	USD
CY2019Q2	us-gaap	Restructuring Charges RestructuringCharges	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	14798000	USD
	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2020Q2	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	19571000	USD
CY2019Q2	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	19571000	USD
	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-6142000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	51756000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	14809000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	81903000	USD
CY2020Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	336000	USD
CY2019Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	140000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2667000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-108000	USD
CY2020Q2	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	3291000	USD
CY2019Q2	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	5223000	USD
	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	8520000	USD
	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	10128000	USD
CY2020Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	203000	USD
CY2019Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-144000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	20000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	783000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-2312000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	56975000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	20682000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	92706000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1170000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8226000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1347000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10853000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-1142000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	48749000	USD
	us-gaap	Net Income Loss NetIncomeLoss	19335000	USD
	us-gaap	Net Income Loss NetIncomeLoss	81853000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.01
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	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.11
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.48
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	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
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	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172345000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171209000	shares
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	172283000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175448000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175499000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175528000	shares
CY2020Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.055
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	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.110
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.100
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-1142000	USD
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	us-gaap	Net Income Loss NetIncomeLoss	19335000	USD
	us-gaap	Net Income Loss NetIncomeLoss	81853000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	12451000	USD
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	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	8590000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	4562000	USD
CY2020Q2	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	85000	USD
CY2019Q2	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	-75000	USD
	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
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	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	5860000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	4140000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1903000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-663000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5462000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-445000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1903000	USD
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	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5462000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-445000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	13314000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1266000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	398000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3695000	USD
CY2020Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12172000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	50015000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19733000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	85548000	USD
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	286021000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	171431000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	143084000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	240470000	USD
CY2020Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	111671000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	103447000	USD
CY2020Q2	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	978000	USD
CY2019Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	4782000	USD
CY2020Q2	us-gaap	Inventory Net InventoryNet	52953000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	60261000	USD
CY2020Q2	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	51768000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	26840000	USD
CY2020Q2	us-gaap	Assets Current AssetsCurrent	646475000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	607231000	USD
CY2020Q2	us-gaap	Long Term Investments LongTermInvestments	467087000	USD
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	433452000	USD
CY2020Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	83936000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	89443000	USD
CY2020Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	25819000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	17522000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	242436000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	243445000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	17337000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	39490000	USD
CY2020Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	443732000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	449519000	USD
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CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	5833000	USD
CY2020Q2	us-gaap	Assets Assets	1934864000	USD
CY2019Q4	us-gaap	Assets Assets	1885935000	USD
CY2020Q2	us-gaap	Accounts Payable Current AccountsPayableCurrent	17999000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	17866000	USD
CY2020Q2	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	66264000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	52199000	USD
CY2020Q2	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	5952000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	30333000	USD
CY2020Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	46738000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	14432000	USD
CY2020Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	7628000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5647000	USD
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CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	120477000	USD
CY2020Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	21208000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12326000	USD
CY2020Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	326295000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	332344000	USD
CY2020Q2	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	12302000	USD
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	11563000	USD
CY2020Q2	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	48915000	USD
CY2019Q4	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	51113000	USD
CY2020Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	5085000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2402000	USD
CY2020Q2	us-gaap	Liabilities Liabilities	558386000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	530225000	USD
CY2020Q2	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2019Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2020Q2	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	346000	USD
CY2019Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	345000	USD
CY2020Q2	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	710412000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	639372000	USD
CY2020Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	702597000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	753268000	USD
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CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-37275000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	1376478000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1355710000	USD
CY2020Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1934864000	USD
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	us-gaap	Net Income Loss NetIncomeLoss	19335000	USD
	us-gaap	Net Income Loss NetIncomeLoss	81853000	USD
	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	22808000	USD
	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	23248000	USD
	us-gaap	Depreciation Depreciation	11162000	USD
	us-gaap	Depreciation Depreciation	10537000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2582000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1538000	USD
	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	19571000	USD
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	cgnx	Excess And Obsolete Inventory Charges ExcessAndObsoleteInventoryCharges	1713000	USD
	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	2534000	USD
	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	0	USD
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	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	342000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2805000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	422000	USD
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	75000	USD
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	0	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-114000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-863000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-1395000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	1311000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	8957000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-11383000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	3804000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-1989000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1664000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-8681000	USD
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	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	463000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	143000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-4528000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	15806000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-12270000	USD
	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-25411000	USD
	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-4000000	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	32586000	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	8575000	USD
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	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1190000	USD
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CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	108212000	USD
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CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8018000	USD
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CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	1376478000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	1188859000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	12071000	USD
CY2019Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	61690000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10967000	USD
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CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	1191640000	USD
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	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	26417000	USD
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	us-gaap	Dividends Cash DividendsCash	17146000	USD
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	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	19571000	USD
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CY2020Q2	us-gaap	Long Term Investments LongTermInvestments	467087000	USD
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CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	6747000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	398000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	610171000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	72657000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	372000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	4225000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	26000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	76882000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	398000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Change In Present Value Expense Reversal DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal	0	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	85000	USD
	us-gaap	Debt Securities Available For Sale Change In Present Value Expense Reversal DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal	160000	USD
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	85000	USD
	us-gaap	Debt Securities Available For Sale Change In Present Value Expense Reversal DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal	0	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	0	USD
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	0	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Change In Present Value Expense Reversal DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal	0	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
	us-gaap	Debt Securities Available For Sale Change In Present Value Expense Reversal DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal	160000	USD
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	85000	USD
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Writeoff DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff	0	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	75000	USD
CY2020Q2	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	962000	USD
CY2020Q2	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	7000	USD
CY2019Q2	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	394000	USD
CY2019Q2	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	12000	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2826000	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	21000	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	458000	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	36000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	143084000	USD
CY2020Q2	cgnx	Available For Sale Securities Debt Maturities After One Year Before Two Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearBeforeTwoYearsFairValue	243567000	USD
CY2020Q2	cgnx	Available For Sale Securities Debt Maturities After Two Years Before Three Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTwoYearsBeforeThreeYearsFairValue	208888000	USD
CY2020Q2	cgnx	Available For Sale Securities Debt Maturities After Three Years Before Four Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsBeforeFourYearsFairValue	10391000	USD
CY2020Q2	cgnx	Available For Sale Securities Debt Maturities After Four Years Before Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFourYearsBeforeFiveYearsFairValue	4241000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	610171000	USD
CY2020Q2	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	20736000	USD
CY2019Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	27285000	USD
CY2020Q2	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	4111000	USD
CY2019Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	5503000	USD
CY2020Q2	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	28106000	USD
CY2019Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	27473000	USD
CY2020Q2	us-gaap	Inventory Net InventoryNet	52953000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	60261000	USD
CY2020Q2	cgnx	Excess And Obsolete Inventory Charges ExcessAndObsoleteInventoryCharges	7718000	USD
	cgnx	Excess And Obsolete Inventory Charges ExcessAndObsoleteInventoryCharges	8783000	USD
CY2020Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	2147000	USD
CY2019Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	1742000	USD
CY2020Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	2091000	USD
CY2019Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	1669000	USD
CY2020Q2	us-gaap	Lease Cost LeaseCost	23000	USD
CY2019Q2	us-gaap	Lease Cost LeaseCost	64000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	4053000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	3227000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3954000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3070000	USD
	us-gaap	Lease Cost LeaseCost	62000	USD
CY2019Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.048
	us-gaap	Lease Cost LeaseCost	233000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	4335000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	8340000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6169000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4973000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2391000	USD
CY2020Q2	cgnx	Lessee Operating Lease Liability Payments Due Year Six LesseeOperatingLeaseLiabilityPaymentsDueYearSix	1322000	USD
CY2020Q2	cgnx	Lessee Operating Lease Liability Payments Dueafter Year Six LesseeOperatingLeaseLiabilityPaymentsDueafterYearSix	4462000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	31992000	USD
CY2020Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	28836000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	17973000	USD
CY2020Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.041
CY2020Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y3M18D
CY2019Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y7M6D
CY2020Q2	cgnx	Operating Lease Right Of Use Asset Carrying Value Of Impaired Asset OperatingLeaseRightOfUseAssetCarryingValueOfImpairedAsset	0	USD
CY2020Q2	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	2534000	USD
CY2020Q2	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	0	USD
CY2019Q2	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	81000	USD
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	77000	USD
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	158000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	243445000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-1009000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	242436000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	73675000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	56338000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	17337000	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	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	39490000	USD
CY2020Q2	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	19571000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	4713000	USD
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	1493000	USD
	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	927000	USD
CY2020Q2	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	5279000	USD
CY2020Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	46000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	857000	USD
CY2020Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	458000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	23000	USD
CY2020Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	0	USD
CY2019Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	0	USD
CY2020Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2019Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2020Q2	us-gaap	Derivative Assets DerivativeAssets	46000	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	857000	USD
CY2020Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	458000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	23000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	3963000	USD
CY2020Q2	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	300000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	169097000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	199047000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	336332000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	372531000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	169097000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	199047000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	336332000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	372531000	USD
CY2020Q2	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	10888000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	600000	USD
CY2019Q2	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	90000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	90000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	530000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	600000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	186000	USD
	cgnx	Accounts Receivable Allowance For Credit Loss Foreign Exchange Rate Adjustment AccountsReceivableAllowanceForCreditLossForeignExchangeRateAdjustment	1000	USD
CY2020Q2	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	945000	USD
CY2019Q4	us-gaap	Deferred Revenue DeferredRevenue	14432000	USD
	us-gaap	Deferred Revenue Additions DeferredRevenueAdditions	57904000	USD
	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	25493000	USD
	cgnx	Deferred Revenue Foreign Currency Exchange Adjustment DeferredRevenueForeignCurrencyExchangeAdjustment	-105000	USD
CY2020Q2	us-gaap	Deferred Revenue DeferredRevenue	46738000	USD
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
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	975000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	51.58
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1822000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	26.47
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	421000	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	50.28
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	11631000	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	40.45
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y11M23D
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	212847000	USD
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	5331000	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0043
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	31.59
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y9M21D
CY2020Q2	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAggregateIntrinsicValue	144694000	USD
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	10683000	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	39.58
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P6Y10M6D
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	204795000	USD
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.016
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.027
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.016
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.027
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0043
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0039
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0039
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.37
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.37
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.37
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.37
CY2020Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2019Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y2M12D
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y3M18D
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	19.13
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	18.68
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	18.52
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	18.59
CY2020Q2	cgnx	Shares Based Compensation Arrangement By Shares Based Payment Award Options Exercisable Intrinsic Value SharesBasedCompensationArrangementBySharesBasedPaymentAwardOptionsExercisableIntrinsicValue	39359000	USD
CY2019Q2	cgnx	Shares Based Compensation Arrangement By Shares Based Payment Award Options Exercisable Intrinsic Value SharesBasedCompensationArrangementBySharesBasedPaymentAwardOptionsExercisableIntrinsicValue	14220000	USD
	cgnx	Shares Based Compensation Arrangement By Shares Based Payment Award Options Exercisable Intrinsic Value SharesBasedCompensationArrangementBySharesBasedPaymentAwardOptionsExercisableIntrinsicValue	53814000	USD
	cgnx	Shares Based Compensation Arrangement By Shares Based Payment Award Options Exercisable Intrinsic Value SharesBasedCompensationArrangementBySharesBasedPaymentAwardOptionsExercisableIntrinsicValue	36799000	USD
CY2020Q2	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Vested Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedFairValue	1287000	USD
CY2019Q2	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Vested Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedFairValue	887000	USD
	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Vested Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedFairValue	37951000	USD
	cgnx	Share Based Compensation Arrangement By Share Based Payment Award Options Vested Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedFairValue	30859000	USD
CY2020Q2	cgnx	Number Of Groups Within Employee Population NumberOfGroupsWithinEmployeePopulation	2	group
CY2020Q2	cgnx	Estimated Forfeiture Rate For Unvested Options For Senior Management EstimatedForfeitureRateForUnvestedOptionsForSeniorManagement	0.07
CY2020Q2	cgnx	Estimated Forfeiture Rate For Unvested Options For All Non Senior Management EstimatedForfeitureRateForUnvestedOptionsForAllNonSeniorManagement	0.12
	cgnx	Increase In Compensation Expense Due To Revised Estimated Forfeiture Rates IncreaseInCompensationExpenseDueToRevisedEstimatedForfeitureRates	1787000	USD
	cgnx	Increase In Compensation Expense Due To Revised Estimated Forfeiture Rates IncreaseInCompensationExpenseDueToRevisedEstimatedForfeitureRates	499000	USD
CY2020Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	65128000	USD
	cgnx	Employee Service Sharebased Compensation Nonvested Awards Compensation Notyet Recognized Periodfor Recognition EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationNotyetRecognizedPeriodforRecognition	P2Y
CY2020Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8018000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Severance Payments DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsSeverancePayments	1401000	USD
CY2020Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1277000	USD
CY2019Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10967000	USD
CY2019Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1813000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	22808000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3841000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23248000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4035000	USD
CY2020Q2	cgnx	Employee Service Share Based Compensation Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2020Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8018000	USD
CY2019Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10967000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	22808000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23248000	USD
CY2020Q2	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	78652000	USD
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	-0.21
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.01
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.05
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.07
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.05
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.07
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.02
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.01
	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.02
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.02
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.29
	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.01
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	1.91
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.04
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	1.41
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.17
	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2020Q2	cgnx	Effective Income Tax Rate Reconciliation Tax Rate Adjustments Percent EffectiveIncomeTaxRateReconciliationTaxRateAdjustmentsPercent	0.18
CY2019Q2	cgnx	Effective Income Tax Rate Reconciliation Tax Rate Adjustments Percent EffectiveIncomeTaxRateReconciliationTaxRateAdjustmentsPercent	0
	cgnx	Effective Income Tax Rate Reconciliation Tax Rate Adjustments Percent EffectiveIncomeTaxRateReconciliationTaxRateAdjustmentsPercent	0
	cgnx	Effective Income Tax Rate Reconciliation Tax Rate Adjustments Percent EffectiveIncomeTaxRateReconciliationTaxRateAdjustmentsPercent	0
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.04
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.02
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.04
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.02
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	4319000	shares
CY2020Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.51
CY2019Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.14
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.07
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.12
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.05
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.05
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.07
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.07
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	1.91
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.29
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.02
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.04
CY2020Q2	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	1.41
	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.17
CY2020Q2	cgnx	Effective Income Tax Rate Reconciliation Excluding Discrete Items Percent EffectiveIncomeTaxRateReconciliationExcludingDiscreteItemsPercent	-0.01
	cgnx	Effective Income Tax Rate Reconciliation Excluding Discrete Items Percent EffectiveIncomeTaxRateReconciliationExcludingDiscreteItemsPercent	0.19
CY2019Q2	cgnx	Effective Income Tax Rate Reconciliation Excluding Discrete Items Percent EffectiveIncomeTaxRateReconciliationExcludingDiscreteItemsPercent	0.17
	cgnx	Effective Income Tax Rate Reconciliation Excluding Discrete Items Percent EffectiveIncomeTaxRateReconciliationExcludingDiscreteItemsPercent	0.16
	cgnx	Effective Income Tax Rate Reconciliation Excluding Discrete Items Percent EffectiveIncomeTaxRateReconciliationExcludingDiscreteItemsPercent	0.16
	cgnx	Effective Income Tax Rate Reconciliation Excluding Discrete Items Percent EffectiveIncomeTaxRateReconciliationExcludingDiscreteItemsPercent	0.19
CY2020Q2	cgnx	Effective Income Tax Rate Reconciliation Tax Rate Adjustments Percent EffectiveIncomeTaxRateReconciliationTaxRateAdjustmentsPercent	0.18
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	172283000	shares
CY2019Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	4130000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3154000	shares
CY2020Q2	us-gaap	Income Tax Examination Increase Decrease In Liability From Prior Year IncomeTaxExaminationIncreaseDecreaseInLiabilityFromPriorYear	710000	USD
	cgnx	Increase Decrease Interest And Penalties IncreaseDecreaseInterestAndPenalties	283000	USD
CY2020Q2	cgnx	Liability For Uncertain Tax Positions LiabilityForUncertainTaxPositions	13330000	USD
CY2020Q2	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	12302000	USD
CY2020Q2	cgnx	Unrecognizedtaxbenefitshownasareductiontononcurrentdeferredtaxassets Unrecognizedtaxbenefitshownasareductiontononcurrentdeferredtaxassets	1028000	USD
CY2020Q2	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1301000	USD
	cgnx	Taxyearsopentoexaminationby Internal Revenue Service TaxyearsopentoexaminationbyInternalRevenueService	2016 through 2019
	cgnx	Income Tax Examination Years Under Examination Other Entities IncomeTaxExaminationYearsUnderExaminationOtherEntities	2015 through 2019
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172283000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171318000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172345000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171209000	shares
CY2020Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175448000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175499000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175528000	shares
CY2020Q2	us-gaap	Weighted Average Number Basic Shares Outstanding Adjustment Pro Forma WeightedAverageNumberBasicSharesOutstandingAdjustmentProForma	3120000	shares
CY2020Q2	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated Inception To Date Percent RestructuringAndRelatedCostNumberOfPositionsEliminatedInceptionToDatePercent	0.08
CY2020Q2	us-gaap	Restructuring And Related Cost Expected Cost1 RestructuringAndRelatedCostExpectedCost1	16445000	USD
CY2020Q2	us-gaap	Restructuring Charges RestructuringCharges	14798000	USD
CY2020Q2	us-gaap	Restructuring And Related Cost Expected Cost1 RestructuringAndRelatedCostExpectedCost1	16445000	USD
CY2020Q2	us-gaap	Restructuring Charges RestructuringCharges	14798000	USD
CY2020Q2	us-gaap	Restructuring And Related Cost Expected Number Of Positions Eliminated RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated	181	Employees
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	14798000	USD
	us-gaap	Payments For Restructuring PaymentsForRestructuring	4689000	USD
	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	3145000	USD
	us-gaap	Restructuring Reserve Translation Adjustment RestructuringReserveTranslationAdjustment	-72000	USD
CY2020Q2	us-gaap	Restructuring Reserve RestructuringReserve	7036000	USD

Files In Submission

Name	View Source	Status
0000851205-20-000011-index-headers.html	Edgar Link	pending
0000851205-20-000011-index.html	Edgar Link	pending
0000851205-20-000011.txt	Edgar Link	pending
0000851205-20-000011-xbrl.zip	Edgar Link	pending
a6282020-10qxexhibit311.htm	Edgar Link	pending
a6282020-10qxexhibit312.htm	Edgar Link	pending
a6282020-10qxexhibit321.htm	Edgar Link	pending
a6282020-10qxexhibit322.htm	Edgar Link	pending
cgnx-20200628.htm	Edgar Link	pending
cgnx-20200628.xsd	Edgar Link	pending
cgnx-20200628_cal.xml	Edgar Link	unprocessable
cgnx-20200628_def.xml	Edgar Link	unprocessable
cgnx-20200628_htm.xml	Edgar Link	completed
cgnx-20200628_lab.xml	Edgar Link	unprocessable
cgnx-20200628_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$CGNX
COGNEX CORP Stock $cgnx

2020 Q2 Form 10-Q Financial Statement

#000085120520000011 Filed on July 29, 2020

Income Statement

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Facts In Submission

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$CGNX COGNEX CORP Stock $cgnx

2020 Q2 Form 10-Q Financial Statement

#000085120520000011 Filed on July 29, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CGNX
COGNEX CORP Stock $cgnx