Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Basic and diluted net income per share
Income from continuing operations, net of income taxes	$ 2,200	$ 1,519	$ 4,618	$ 3,342
Loss from discontinued operations, net of income taxes		(75)		(9)
Net Income	$ 2,200	$ 1,444	$ 4,618	$ 3,333
Weighted average shares outstanding	8,878	8,836	8,866	8,827
Weighted effect of dilutive options and rights	80	64	83	71
Weighted average shares outstanding assuming dilution	8,958	8,900	8,949	8,898
Net income (loss) per share:
From continuing operations	$ 0.25	$ 0.17	$ 0.52	$ 0.38
From discontinued operations		$ (0.01)
Net income per share	$ 0.25	$ 0.16	$ 0.52	$ 0.38
Net income (loss) per share assuming dilution [Member]
Net income (loss) per share:
From continuing operations	$ 0.25	$ 0.17	$ 0.52	$ 0.38
From discontinued operations		$ (0.01)		$ (0.01)
Net income per share	$ 0.25	$ 0.16	$ 0.52	$ 0.37