Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
Numerators:
Income from continuing operations	$ 1,906	$ 3,446
Consolidated net income	$ 1,906	$ 3,446
Denominators:
Weighted average common shares outstanding—basic	34,657	34,506
Dilutive potential common shares	196	493
Weighted average common shares outstanding— diluted	34,853	34,999
Basic Earnings per Common Share:
From continuing operations	$ 0.05	$ 0.10
Basic earnings per share	0.05	0.10
Diluted Earnings per Common Share:
From continuing operations	0.05	0.10
Diluted earnings per share	$ 0.05	$ 0.10