Restructuring and Other Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Cadence's Restructuring Plans
Beginning Balance			$ 5,027
Restructuring and other charges (credits), net	57	(433)	49	277
Cash payments			(653)
Effect of foreign currency translation			69
Ending Balance	4,492		4,492
Severance and Benefits [Member]
Cadence's Restructuring Plans
Beginning Balance			46
Restructuring and other charges (credits), net			(29)
Cash payments			(17)
Effect of foreign currency translation			0
Ending Balance	0		0
Excess Facilities [Member]
Cadence's Restructuring Plans
Beginning Balance	4,512		4,976
Restructuring and other charges (credits), net	57		83
Cash payments	(176)		(636)
Effect of foreign currency translation	99		69
Ending Balance	4,492		4,492
Other [Member]
Cadence's Restructuring Plans
Beginning Balance			5
Restructuring and other charges (credits), net			(5)
Cash payments			0
Effect of foreign currency translation			0
Ending Balance	$ 0		$ 0