Restructuring and Other Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Cadence's Restructuring Plans
Beginning Balance	$ 1,137	$ 6,210	$ 14,224
Restructuring and other charges (credits), net	40,955	4,511	10,252
Restructuring Activities Non Cash Charges Adjustments	(159)	(116)	(2,450)
Cash payments	(17,569)	(9,381)	(15,285)
Effect of foreign currency translation	96	(87)	(531)
Ending Balance	24,460	1,137	6,210
Severance and Benefits [Member]
Cadence's Restructuring Plans
Beginning Balance	751	4,462	10,672
Restructuring and other charges (credits), net	40,411	3,636	8,004
Restructuring Activities Non Cash Charges Adjustments	0	0	0
Cash payments	(16,890)	(7,322)	(13,967)
Effect of foreign currency translation	130	(25)	(247)
Ending Balance	24,402	751	4,462
Excess Facilities [Member]
Cadence's Restructuring Plans
Beginning Balance	386	1,267	3,552
Restructuring and other charges (credits), net	544	1,095	945
Restructuring Activities Non Cash Charges Adjustments	(159)	(116)	0
Cash payments	(679)	(1,798)	(1,056)
Effect of foreign currency translation	(34)	(62)	(284)
Ending Balance	58	386	1,267
Other [Member]
Cadence's Restructuring Plans
Beginning Balance	0	481	0
Restructuring and other charges (credits), net	0		3,193
Restructuring Reserve, Accrual Adjustment		(220)
Restructuring Activities Non Cash Charges Adjustments	0	0	(2,450)
Cash payments	0	(261)	(262)
Effect of foreign currency translation	0	0	0
Ending Balance	$ 0	$ 0	$ 481