Net Income Per Share (Details 1) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	21,261	79,387	21,097	79,155
2015 Warrants (various expiration dates through 2015) [Member]
Potential shares of Cadence's common stock excluded
Total potential common shares excluded		46,382		46,382
2011 Warrants and 2013 Warrants (various Expiration dates through 2014) [Member]
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	6,830	14,184	6,830	14,184
Options to purchase shares of common stock (various expiration dates through 2022) [Member]
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	14,228	18,812	14,149	18,564
Non-vested shares of restricted stock [Member]
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	203	9	118	25