Restructuring and Other Charges (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Cadence's Restructuring Plans
Beginning Balance	$ 15,071,000	$ 25,452,000	$ 38,174,000
Restructuring and other charges	360,000	10,152,000	31,376,000
Non-cash charges	137,000	(3,471,000)	355,000
Cash payments	(10,604,000)	(16,310,000)	(44,530,000)
Effect of foreign currency translation	63,000	(752,000)	77,000
Ending Balance	5,027,000	15,071,000	25,452,000
Restructuring and Other Charges (Textual) [Abstract]
Maximum Amount of estimated lease losses based on changes in assumptions	7,700,000
Severance and Benefits [Member]
Cadence's Restructuring Plans
Beginning Balance	9,198,000	18,925,000	29,667,000
Restructuring and other charges	(944,000)	5,147,000	32,044,000
Cash payments	(8,385,000)	(14,421,000)	(42,320,000)
Effect of foreign currency translation	177,000	(453,000)	(466,000)
Ending Balance	46,000	9,198,000	18,925,000
Excess Facilities [Member]
Cadence's Restructuring Plans
Beginning Balance	5,868,000	6,522,000	8,423,000
Restructuring and other charges	1,304,000	1,227,000	(658,000)
Non-cash charges	137,000	307,000	355,000
Cash payments	(2,219,000)	(1,889,000)	(2,141,000)
Effect of foreign currency translation	(114,000)	(299,000)	543,000
Ending Balance	4,976,000	5,868,000	6,522,000
Others [Member]
Cadence's Restructuring Plans
Beginning Balance		5,000	84,000
Restructuring and other charges		3,778,000	(10,000)
Non-cash charges		(3,778,000)
Cash payments			(69,000)
Ending Balance	$ 5,000	$ 5,000	$ 5,000