Net Income Per Share (Details 1) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	16,843	81,287	19,679	78,781
2015 Warrants (various expiration dates through 2015) [Member]
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	0	46,382	0	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	17,916	6,830	18,194
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	10,003	14,184	12,767	14,184
Non-vested shares of restricted stock [Member]
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	10	2,805	82	21