Consolidated Statements Of Changes In Stockholders' Equity (USD $) In Thousands, except Share data	Unrealized Gains On Securities [Member] Accumulated Other Comprehensive Income/(Loss), Net Of Tax [Member]	Interest Rate Floor [Member] Accumulated Other Comprehensive Income/(Loss), Net Of Tax [Member]	Interest Rate Swap [Member] Accumulated Other Comprehensive Income/(Loss), Net Of Tax [Member]	Preferred Stock [Member]	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss), Net Of Tax [Member]	Treasury Stock [Member]	Total
Balance at beginning of period at Dec. 31, 2008	$ 4,288	$ 2,230		$ 49,028	$ 15,289	$ 88,771	$ 90,540		$ (10,787)
Balance at beginning of period, shares at Dec. 31, 2008				52,000	15,289,625				1,331,102
Accretion of fair value of warrant				524			(578)
Issuance of restricted shares					89	(89)
Issuance of restricted shares, shares					88,750
Proceeds from exercise of stock options					1	6
Proceeds from exercise of stock options, shares					756
Stock-based compensation						701
Net income (loss)							(41,789)			(41,789)
Dividends on preferred shares							(2,583)
Cash dividends on common shares							(1,374)
Change during period	(896)	(1,121)	2,739							722
Purchase of treasury shares									(25)
Purchase of treasury shares, shares									3,122
Balance at end of period at Dec. 31, 2009	3,392	1,109	2,739	49,552	15,379	89,389	44,216	7,240	(10,812)	194,964
Balance at end of period, shares at Dec. 31, 2009				52,000	15,379,131				1,334,224
Issuance of common stock					9,473	75,797
Issuance of common stock, shares					9,473,125
Accretion of fair value of warrant				569			(569)
Issuance of restricted shares					121	(121)
Issuance of restricted shares, shares					121,300
Cancellation of restricted shares					(8)	9
Cancellation of restricted shares, shares					(8,500)
Proceeds from exercise of stock options					18	132
Proceeds from exercise of stock options, shares					17,855
Stock-based compensation						724
Net income (loss)							(3,989)			(3,989)
Dividends on preferred shares							(2,636)
Cash dividends on common shares							(22)
Change during period	(1,579)	(550)	1,093							(1,036)
Purchase of treasury shares									(19)
Purchase of treasury shares, shares									1,950
Balance at end of period at Dec. 31, 2010	1,813	559	3,832	50,121	24,983	165,930	37,000	6,204	(10,831)	273,407
Balance at end of period, shares at Dec. 31, 2010				52,000	24,982,911				1,336,174
Accretion of fair value of warrant				606			(606)
Issuance of restricted shares					135	(135)
Issuance of restricted shares, shares					135,075
Cancellation of restricted shares					(34)	34
Cancellation of restricted shares, shares					(34,150)
Proceeds from exercise of stock options					3	25
Proceeds from exercise of stock options, shares					3,632
Stock-based compensation						785
Net income (loss)							21,093			21,093
Dividends on preferred shares							(2,635)
Change during period	4,627	(559)	(2,976)							1,092
Balance at end of period at Dec. 31, 2011	$ 6,440		$ 856	$ 50,727	$ 25,087	$ 166,639	$ 54,852	$ 7,296	$ (10,831)	$ 293,770
Balance at end of period, shares at Dec. 31, 2011				52,000	25,087,468				1,336,174