Net Income Per Share (Details 1) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 04, 2015	Mar. 29, 2014
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	1,126	6,163
2013 Warrants
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	0	1,518
Options to purchase shares of common stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	1,113	4,634
Non-vested shares of restricted stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	13	11