CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 214,678	$ 192,789	$ 162,587
OTHER COMPREHENSIVE LOSS, BEFORE TAX:
Currency translation adjustment	(94)	(2,076)	(1,468)
Other Comprehensive Loss, before Tax, Total	(94)	(2,076)	(1,468)
TAX ATTRIBUTES OF ITEMS IN OTHER COMPREHENSIVE INCOME:
Currency translation adjustment	532	1,189	791
Other Comprehensive Income, Tax	532	1,189	791
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	438	(887)	(677)
COMPREHENSIVE INCOME	$ 215,116	$ 191,902	$ 161,910