Net Income Per Share (Details 1) - shares shares in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	832	1,126
Options to purchase shares of common stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	749	1,113
Non-vested shares of restricted stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	83	13