Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data	Total	Preferred Stock [Member]	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income, Net of Tax [Member]	Treasury Stock [Member]
Balance at beginning of period at Dec. 31, 2011		$ 50,727	$ 25,087	$ 166,639	$ 54,852	$ 7,296	$ 10,831
Balance at beginning of period, Shares at Dec. 31, 2011		52,000	25,087,468
Stock-based compensation				111
Net income	7,860				7,860
Other comprehensive income (loss)	509					509
Issuance of restricted shares			67	(67)
Accretion of fair value of warrant		317
Dividends on preferred shares					(1,314)
Issuance of restricted shares, Shares			67,450
Accretion of fair value of warrant, Shares
Accretion of fair value of warrant					(317)
Proceeds from exercise of stock options			1	2
Proceeds from exercise of stock options, Shares			400
Balance at end of period at Jun. 30, 2012	300,939	51,044	25,155	166,685	61,081	7,805	10,831
Balance at end of period, Shares at Jun. 30, 2012		52,000	25,155,318
Balance at beginning of period at Dec. 31, 2012	279,017	27,662	25,155	164,949	65,710	6,607	11,066
Balance at beginning of period, Shares at Dec. 31, 2012		28,000	25,154,818
Stock-based compensation				395
Net income	11,963				11,963
Other comprehensive income (loss)	(3,025)					(3,025)
Purchase of treasury shares							116
Issuance of restricted shares			83	(83)
Accretion of fair value of warrant		183
Dividends on preferred shares					(700)
Issuance of restricted shares, Shares			83,400
Accretion of fair value of warrant, Shares
Accretion of fair value of warrant					(183)
Cancellation of restricted shares			(1)	1
Cancellation of restricted shares, Shares			(1,000)
Proceeds from exercise of stock options			21	222
Proceeds from exercise of stock options, Shares			20,451
Balance at end of period at Jun. 30, 2013	$ 287,777	$ 27,845	$ 25,258	$ 165,484	$ 76,790	$ 3,582	$ 11,182
Balance at end of period, Shares at Jun. 30, 2013		28,000	25,257,669