Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Basic net income per share:
Net income applicable to common shares	$ 134	$ 395	$ 309	$ 705
Weighted average common shares outstanding	11,288	12,426	11,319	12,391
Basic net income per share of common stock	$ 0.01	$ 0.03	$ 0.03	$ 0.06
Diluted net income per share:
Net income applicable to common shares	$ 134	$ 395	$ 309	$ 705
Weighted average common shares outstanding	11,288	12,426	11,319	12,391
Weighted average common shares, assuming dilutive effect of stock options	11,836	12,456	11,682	12,402
Diluted net income per share of common stock	$ 0.01	$ 0.03	$ 0.03	$ 0.06
Stock Option [Member]
Diluted net income per share:
Dilutive effects of stock options	548	30	363	11