Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Jan. 02, 2016
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 0	$ 0	$ 0	$ 0
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation gain	(7,662)		(7,662)		$ (9,569)
Changes in defined benefit plan liabilities	(3,093)		(3,093)		(3,066)
Unrealized holding gains on available-for-sale securities	770		770		210
Total accumulated other comprehensive loss	$ (9,985)		$ (9,985)		$ (12,425)