Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2016	Mar. 22, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 45,451	$ 46,289
Other comprehensive income (loss), before tax:
Currency translation adjustment	657	(810)
Tax attributes of items in other comprehensive income (loss):
Currency translation adjustment	(72)	381
Other comprehensive income (loss), net of tax	585	(429)
Comprehensive income	$ 46,036	$ 45,860