Net Income Per Share (Details 1) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	12,600	21,261	13,092	21,097
2013 Warrants
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	6,830	6,830	6,830	6,830
Options to purchase shares of common stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	5,752	14,228	6,253	14,149
Non-vested shares of restricted stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	18	203	9	118