Condensed Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Comprehensive loss is calculated as follows:
Net loss	$ (5,074)	$ (2,398)	$ (8,460)	$ (6,554)
Other comprehensive income:
Foreign currency translation adjustment	23	47	88	49
Comprehensive loss	$ (5,051)	$ (2,351)	$ (8,372)	$ (6,505)