Net Income Per Share (Details 1) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	1,417	1,641	1,773	1,430
Long-term performance-based stock awards
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	1,250	0	1,008	0
Options to purchase shares of common stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	160	1,472	729	1,362
Non-vested shares of restricted stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	7	169	36	68