Consolidated Statements Of Changes In Stockholders' Equity (USD $) In Thousands, except Share data	Unrealized Gains On Securities [Member] Accumulated Other Comprehensive Income, Net of Tax [Member]	Preferred Stock [Member]	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance at beginning of period at Dec. 31, 2010	$ 6,204	$ 50,121	$ 24,983	$ 165,930	$ 37,000	$ 10,831
Balance at beginning of period, shares at Dec. 31, 2010		52,000	24,982,911
Accretion of fair value of warrant		148			(148)
Issuance of restricted shares			125	(125)
Issuance of restricted shares, shares			125,075
Cancellation of restricted shares			(7)	7
Cancellation of restricted shares, shares			(7,000)
Proceeds from exercise of stock options			1	9
Proceeds from exercise of stock options, shares			1,232
Stock-based compensation				174
Net income					1,378		1,378
Dividends on preferred shares					(650)
Accumulated other comprehensive income	(462)						(462)
Balance at end of period at Mar. 31, 2011	5,742	50,269	25,102	165,995	37,580	10,831	273,857
Balance at end of period, shares at Mar. 31, 2011		52,000	25,102,218
Balance at beginning of period at Dec. 31, 2011	7,296	50,727	25,087	166,639	54,852	10,831	293,770
Balance at beginning of period, shares at Dec. 31, 2011		52,000	25,087,468
Accretion of fair value of warrant		157			(158)
Issuance of restricted shares			62	(62)
Issuance of restricted shares, shares			62,450
Proceeds from exercise of stock options			1	2
Proceeds from exercise of stock options, shares			400
Net income					5,365		5,365
Dividends on preferred shares					(657)
Accumulated other comprehensive income	(783)						(783)
Balance at end of period at Mar. 31, 2012	$ 6,513	$ 50,884	$ 25,150	$ 166,579	$ 59,402	$ 10,831	$ 297,697
Balance at end of period, shares at Mar. 31, 2012		52,000	25,150,318