Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Statement Condensed Consolidated Statements Of Comprehensive Income Unaudited [Line Items]
Net income (loss)	$ 530	$ (745)	$ 1,819	$ 1,196
Recognition of accumulated foreign currency translation loss related to sale of foreign operations	0	0	0	35
Comprehensive income (loss)	$ 530	$ (745)	$ 1,819	$ 1,231