Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Earnings Per Share, Two Class Method and Antidilutive Securities Excluded from Computation [Line Items]
Net income	$ 1,753	$ 1,106	$ 3,360	$ 2,056
Preferred dividends	471	440	934	872
Net income applicable to common stock	1,282	666	2,426	1,184
Net income allocated to common stockholders, Distributed	92	93	184	185
Net income allocated to common stockholders, Undistributed	1,134	568	2,181	991
Distributed and undistributed earnings	$ 1,226	$ 661	$ 2,365	$ 1,176
Weighted-average basic common and participating shares outstanding	9,596,919	9,178,201	9,399,697	9,173,888
Weighted-average basic shares outstanding	9,164,576	9,118,267	9,160,526	9,113,706
Less: weighted average participating restricted shares outstanding	432,343	59,934	239,171	60,182
Basic net income per share (in dollars per share)	$ 0.14	$ 0.07	$ 0.26	$ 0.13
Add: share-based options and stock warrant	0	0	0	0
Weighted-average dilutive shares oustanding	9,164,576	9,118,267	9,160,526	9,113,706
Dilutive net income per share (in dollars per share)	$ 0.14	$ 0.07	$ 0.26	$ 0.13
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	29,714	32,848	31,657	32,625
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	432,343	59,934	239,171	60,182