Computation of Basic and Diluted Net Income (Loss) Per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Numerator:
Income (loss) from continuing operations	$ 530	$ (555)	$ 1,819	$ (423)
(Loss) income from discontinued operations, net of tax	0	(190)	0	1,619
Net income (loss)	$ 530	$ (745)	$ 1,819	$ 1,196
Denominator:
Weighted average shares of common stock (basic)	9,796	9,005	9,044	8,974
Effect of dilutive preferred shares	0	0	597	0
Effect of dilutive stock options	276	0	270	0
Effect of dilutive contingent shares	105	0	84	0
Weighted average shares of common stock (diluted)	10,177	9,005	9,995	8,974
Basic income (loss) per share:
Income (loss) before discontinued operations	$ 0.05	$ (0.06)	$ 0.20	$ (0.05)
Discontinued operations	$ 0.00	$ (0.02)	$ 0.00	$ 0.18
Net income (loss)	$ 0.05	$ (0.08)	$ 0.20	$ 0.13
Diluted income (loss) per share:
Income (loss) before discontinued operations	$ 0.05	$ (0.06)	$ 0.18	$ (0.05)
Discontinued operations	$ 0.00	$ (0.02)	$ 0.00	$ 0.18
Net income (loss)	$ 0.05	$ (0.08)	$ 0.18	$ 0.13