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Employee Savings Plan | 12 Months Ended
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Dec. 31, 2023
Retirement Benefits [Abstract] |
Employee Savings Plan | Employee Savings Plan Under the Company's Employee Savings Plan, a defined contribution plan, all U.S. employees who have attained age 21 may contribute up to 100% of their pay on a pre-tax basis under the Company's Employee Savings Plan, subject to the annual dollar limitations established by the Internal Revenue Service ("IRS"). The Company matches 50% of the first 6% of pay an employee contributes. Company contributions vest 25%, 50%, 75%, and 100% after one, two, three, and four years of continuous employment with the Company, respectively. Company contributions totaled $3,392,000 in 2023, $3,284,000 in 2022, and $2,898,000 in 2021. Cognex stock is not an investment alternative and Company contributions are not made in the form of Cognex stock.

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