Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Earnings Per Share, Two Class Method and Antidilutive Securities Excluded from Computation [Line Items]
Net income	$ 1,794	$ 1,330	$ 5,154	$ 3,386
Preferred dividends	479	448	1,413	1,320
Net income attributable to common stock	1,315	882	3,741	2,066
Net income allocated to common stockholders, Distributed	92	89	276	273
Net income allocated to common stockholders, Undistributed	1,172	789	3,353	1,781
Distributed and undistributed earnings	$ 1,264	$ 878	$ 3,629	$ 2,054
Weighted-average basic common and participating shares outstanding	9,599,721	9,184,872	9,452,463	9,177,590
Weighted-average basic shares outstanding	9,185,803	9,133,481	9,169,013	9,120,370
Less: weighted average participating restricted shares outstanding	413,918	51,391	283,450	57,220
Basic net income per share (in dollars per share)	$ 0.14	$ 0.10	$ 0.40	$ 0.23
Add: share-based options and stock warrant	1,594	0	0	0
Weighted-average basic common and participating shares outstanding including share based options and stock warrants	9,601,315	9,184,872	9,452,463	9,177,590
Weighted-average dilutive shares oustanding	9,187,397	9,133,481	9,169,013	9,120,370
Dilutive net income per share (in dollars per share)	$ 0.14	$ 0.10	$ 0.40	$ 0.23
Stock Options
Earnings Per Share, Two Class Method and Antidilutive Securities Excluded from Computation [Line Items]
Weighted-average shares of potentially dilutive instruments that are not included in dilutive share calculation due to anti-dilutive effect	19,600	33,600	30,429	32,954
Stock Warrant
Earnings Per Share, Two Class Method and Antidilutive Securities Excluded from Computation [Line Items]
Weighted-average shares of potentially dilutive instruments that are not included in dilutive share calculation due to anti-dilutive effect	513,113	513,113	513,113	513,113
Restricted Stock
Earnings Per Share, Two Class Method and Antidilutive Securities Excluded from Computation [Line Items]
Less: weighted average participating restricted shares outstanding	413,918	51,391	283,450	57,220