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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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Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
Shares of common stock issued under employee stock purchase plan |  |  |
Cadence shares purchased under the ESPP | 988 | 892 | 1,270
Cash received for the purchase of shares under the ESPP | $ 38,290 | $ 29,160 | $ 26,709
Weighted-average purchase price per share | $ 38.74 | $ 32.69 | $ 21.04

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