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Revenue Recognition - Deferred Revenue and Customer Deposits Rollforward (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Customer Contracts Liability, Current |  |
Beginning balance | $ 31,525 | $ 40,787
Deferred revenue and customer deposits | 21,998 | 21,538
Recognition of revenue deferred in prior period | (28,108) | (20,987)
Foreign exchange rate changes | (380) | (608)
End balance | $ 25,035 | 31,525
Deferred Revenue, Refund Payments |  | $ (9,205)

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- Definition Contract Liability Foreign Exchange Rate Changes + References No definition available. + Details
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- Definition Contract with Customer, Liability, Current And Prior Period Revenue Recognized + References No definition available. + Details
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- Definition Contract With Customer, Liability, Period Increase (Decrease) + References No definition available. + Details
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Namespace Prefix: | cgnx_
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- Definition Customer Contracts Liability Current [Roll Forward] + References No definition available. + Details
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Namespace Prefix: | cgnx_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-2 + Details
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- Definition Amount of cash outflow to customers for refund payments of revenue that was previously reported as deferred or unearned revenue. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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