Net Income Per Share (Details 1) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	6,163	13,584
2013 Warrants
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	1,518	6,830
Options to purchase shares of common stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	4,634	6,754
Non-vested shares of restricted stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	11	0