Restructuring and Other Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Cadence's Restructuring Plans
Beginning Balance	$ 4,797		$ 5,027
Restructuring and other charges (credits), net	43	751	(8)	710
Cash payments	(155)		(477)
Effect of foreign currency translation	(173)		(30)
Ending Balance	4,512		4,512
Severance and Benefits [Member]
Cadence's Restructuring Plans
Beginning Balance			46
Restructuring and other charges (credits), net			(29)
Cash payments			(17)
Excess Facilities [Member]
Cadence's Restructuring Plans
Beginning Balance	4,792		4,976
Restructuring and other charges (credits), net	48		26
Cash payments	(155)		(460)
Effect of foreign currency translation	(173)		(30)
Ending Balance	4,512		4,512
Other [Member]
Cadence's Restructuring Plans
Beginning Balance	5		5
Restructuring and other charges (credits), net	$ (5)		$ (5)