Revenue Recognition - Revenue Disaggregated by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 276,892	$ 234,742	$ 742,021	$ 684,831
Americas
Disaggregation of Revenue [Line Items]
Revenue	104,513	82,293	296,499	250,590
Europe
Disaggregation of Revenue [Line Items]
Revenue	74,687	57,246	190,640	166,751
Greater China
Disaggregation of Revenue [Line Items]
Revenue	49,708	45,301	121,502	129,760
Other Asia
Disaggregation of Revenue [Line Items]
Revenue	$ 47,984	$ 49,902	$ 133,380	$ 137,730

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

COGNEX CORP 10-Q