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Stock Compensation Plans and Stock Based Compensation (Details 9) - Employee stock purchase plans [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Shares of common stock issued under employee stock purchase plan |  |  |
Cadence shares purchased under the ESPP | 785 | 988 | 892
Cash received for the purchase of shares under the ESPP | $ 48,328 | $ 38,290 | $ 29,160
Weighted-average purchase price per share | $ 61.55 | $ 38.74 | $ 32.69

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