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, 2012		$ 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				(1,355,050)
Stock-based compensation				197
Net income	5,285				5,284
Other comprehensive income during the period	(332)					(333)
Purchase of treasury shares							(110)
Dividends on preferred shares					(349)
Issuance of restricted shares			81	(81)
Purchase of treasury shares, shares							(7,905)
Issuance of restricted shares, shares			81,400
Proceeds from exercise of stock options			3	13
Proceeds from exercise of stock options, shares			2,417
Accretion of fair value of warrant		91			(91)
Balance at end of period at Mar. 31, 2013	283,722	27,753	25,239	165,078	70,554	6,274	(11,176)
Balance at end of period, shares at Mar. 31, 2013		28,000	25,238,635				(1,362,955)
Balance at beginning of period at Dec. 31, 2013	316,699	28,000	26,462	189,722	83,991	(294)	(11,182)
Balance at beginning of period, shares at Dec. 31, 2013		28,000	26,461,769				(1,363,342)
Stock-based compensation				795
Net income	8,350				8,350
Other comprehensive income during the period	2,668					2,668
Repurchase of preferred stock		(28,000)
Purchase of treasury shares							(266)
Dividends on preferred shares					(286)
Issuance of restricted shares			68	(68)
Repurchase of preferred stock, shares		(28,000)
Purchase of treasury shares, shares							(13,156)
Issuance of restricted shares, shares			68,047
Proceeds from exercise of stock options			6	64
Proceeds from exercise of stock options, shares			5,755
Balance at end of period at Mar. 31, 2014	$ 300,030		$ 26,536	$ 190,513	$ 92,055	$ 2,374	$ (11,448)
Balance at end of period, shares at Mar. 31, 2014			26,535,571				(1,376,498)