Cash, Cash Equivalents and Investments - Additional Information (Detail) (USD $)
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12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Schedule of Available-for-sale Securities [Line Items] | |||
Cash balance included foreign bank balance | $ 43,732,000cgnx_DueFromForeignBanks | $ 32,096,000cgnx_DueFromForeignBanks | |
Gross realized gains on sale of debt securities | 843,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 508,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 1,990,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains |
Gross realized losses on sale of debt securities | 170,000us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | 194,000us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | 295,000us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses |
Maximum amount committed to invest in limited partnership | 20,500,000cgnx_MaximumInvestmentInLimitedPartnership | ||
Contribution to limited partnership | 19,886,000cgnx_ContributionToLimitedPartnership | ||
Remaining amount of commitment in limited partnership | 614,000cgnx_RemainingAmountOfCommitment | ||
Received a stock distribution | 362,000cgnx_StockDistributionReceivedFromLimitedPartnershipCompany | 2,193,000cgnx_StockDistributionReceivedFromLimitedPartnershipCompany | |
Proceeds for liquidation of stock | 347,000cgnx_ProceedsFromSaleOfCostMethodInvestment | 2,128,000cgnx_ProceedsFromSaleOfCostMethodInvestment | |
Recorded a realized loss on stock distribution | 15,000us-gaap_CostmethodInvestmentsRealizedLossesExcludingOtherThanTemporaryImpairments | 65,000us-gaap_CostmethodInvestmentsRealizedLossesExcludingOtherThanTemporaryImpairments | |
Proceeds from Limited Partnership Investments | 1,422,000us-gaap_ProceedsFromLimitedPartnershipInvestments | ||
Carrying value of investment | 1,956,000us-gaap_CostMethodInvestments | 1,956,000us-gaap_CostMethodInvestments | |
Cost Method Investments, Fair Value Disclosure | 6,200,000us-gaap_CostMethodInvestmentsFairValueDisclosure | ||
Payments to Acquire Marketable Securities | 2,136,000us-gaap_PaymentsToAcquireMarketableSecurities | ||
Trading Securities, Unrealized Holding Loss | 5,000us-gaap_TradingSecuritiesUnrealizedHoldingLoss | ||
Trading Securities | 1,429,000us-gaap_TradingSecurities | ||
Trading Securities, Realized Loss | $ 702,000us-gaap_TradingSecuritiesRealizedLoss |
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- Definition
Contribution to limited partnership. No definition available.
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- Definition
Due from foreign banks. No definition available.
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- Definition
Maximum amount committed to invest in limited partnership. No definition available.
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- Definition
Proceeds From Sale Of Cost Method Investment No definition available.
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- Definition
Remaining amount of commitment in limited partnership. No definition available.
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- Definition
Stock distribution received from limited partnership company. No definition available.
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- Definition
This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value portion of investments accounted under the cost method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
For investments in debt and equity securities accounted for at cost, the excess of the carrying amount over net sale proceeds of investments disposed of during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Cash outflow for purchase of trading, available-for-sale securities and held-to-maturity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Cash inflow received as distributions, returns of capital, or sale proceeds from partnership interests held for investment purposes. No definition available.
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- Details
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- Definition
Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the loss realized during the period from the sale of trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of unrealized holding loss before gain recognized in the income statement for investments in trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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