Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 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	(6,711)		(6,711)		$ (9,569)
Changes in defined benefit plan liabilities	(3,331)		(3,331)		(3,066)
Unrealized holding gains on available-for-sale securities	892		892		210
Total accumulated other comprehensive loss	$ (9,150)		$ (9,150)		$ (12,425)