Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 474	$ 10,038	$ 2,231
Comprehensive income	$ 474	$ 10,038	$ 2,231