Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 490	$ 530	$ 1,274	$ 1,819
Other comprehensive income, net of tax	0	0	0	0
Comprehensive income	$ 490	$ 530	$ 1,274	$ 1,819