CONDENSED UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (5,093)	$ (3,638)
Total other comprehensive income, net of tax	0	0
Total comprehensive loss	$ (5,093)	$ (3,638)