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
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Shares of common stock issued under employee stock purchase plan
Cadence shares purchased under the ESPP	1,519	1,689	1,382
Cash received for the purchase of shares under the ESPP	$ 22,449	$ 20,017	$ 15,088
Weighted-average purchase price per share	$ 14.78	$ 11.85	$ 10.91