Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2010 Series C Preferred Stock	Mar. 31, 2013 Series C Preferred Stock
Earnings Per Share
Number of shares issued to various institutional investors			21,004
Number of common stock into which preferred stock are convertible (in shares)				5,601,000
Reconciliation of factors used in computing basic and diluted earnings (loss) per common share
Net income available to common shareholders	$ 2,180	$ 869
Less: net income allocated to Series C Preferred Stock	382	153
Net income allocated to common shareholders	$ 1,798	$ 716
Weighted average common shares outstanding for basic earnings per common share	26,329,343	26,289,334
Dilutive effect of stock options outstanding, using the treasury stock method (in shares)	49,114	27,220
Shares used in computing diluted earnings per common share	26,378,457	26,316,554
Basic earnings per share (in dollars per share)	$ 0.07	$ 0.03
Diluted earnings per share (in dollars per share)	$ 0.07	$ 0.03