Consolidated Statements Of Changes In Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Preferred Stock, Series A Retained Earnings (Accumulated Deficit)	Preferred Stock, Series A	Preferred Stock, Series B	Preferred Stock, Series B Surplus	Preferred Stock, Series B Retained Earnings (Accumulated Deficit)	Preferred Stock, Series B	Preferred Stock, Series C	Preferred Stock, Series C Surplus	Preferred Stock, Series C Retained Earnings (Accumulated Deficit)	Preferred Stock, Series C	Preferred Stock, Series D	Preferred Stock, Series D Surplus	Preferred Stock, Series D Treasury Stock	Preferred Stock, Series E	Preferred Stock, Series E Preferred Stock, Series G	Preferred Stock, Series E Common Stock	Preferred Stock, Series E Surplus	Preferred Stock, Series E Retained Earnings (Accumulated Deficit)	Preferred Stock, Series E	Preferred Stock, Series A	Preferred Stock, Series B	Preferred Stock, Series C	Preferred Stock, Series D	Preferred Stock, Series E	Preferred Stock, Series F	Preferred Stock, Series G	Common Stock	Surplus	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance at Dec. 31, 2008																				$ 60,000	$ 97,314						$ 121	$ 224,872	$ (69,294)	$ 18,710	$ (24,636)	$ 307,087
Adoption of FSP FAS 115-2 and 124-2, effective April 1, 2009																													1,710	(1,033)		677
Preferred stock issuance cost				(27)		(27)
Amortization of stock-based compensation awards																											(1)	2,094				2,093
Tax benefit on stock options and stock awards																												(541)				(541)
Comprehensive loss\ income:
Net income (loss)																													(31,550)			(31,550)
Change in unrealized gains on available for sale investment securities, net of reclassification adjustment and of income taxes																														(5,115)		(5,115)
Changes in deferred gain from termination of cash flow hedging instruments, net of income taxes																														(3,865)		(3,865)
Total comprehensive loss																																(40,530)
Preferred stock dividends declared	(4,800)	(4,800)
Preferred stock dividends and discounts accumulated			1,530		(6,683)	(5,153)
Balance at Dec. 31, 2009																				60,000	98,844						120	226,398	(110,617)	8,697	(24,636)	258,806
Preferred stock issuance cost							31,912	(964)		30,948	4	4,945	(4,949)	5,588			(291)		5,297
Conversion of Preferred stock to common stock																				(60,000)							60	59,919				(21)
Implied noncash preferred dividend																											12	15,744	(15,756)
Issuance of warrants to purchase common stock, net of issuance costs																												4,787				4,787
Issuance of restricted stock grants, net of forfeitures
Exercise of stock options																												5				5
Amortization of stock-based compensation awards																												2,150				2,150
Comprehensive loss\ income:
Net income (loss)																													(53,823)			(53,823)
Change in unrealized gains on available for sale investment securities, net of reclassification adjustment and of income taxes																														(26,946)		(26,946)
Change in net unrealized loss from cash flow hedging instruments, net of income taxes																														(2,069)		(2,069)
Changes in deferred gain from termination of cash flow hedging instruments, net of income taxes																														(1,904)		(1,904)
Change in deferred loss on investments transferred to held to maturity from available for sale, net of income taxes																														(275)		(275)
Total comprehensive loss																																(85,017)
Preferred stock dividends declared	(1,200)	(1,200)							(1,610)	(1,610)								(103)	(103)
Preferred stock dividends and discounts accumulated			1,545		(6,786)	(5,241)
Balance at Dec. 31, 2010																					100,389	31,912	4	5,588			192	312,693	(189,895)	(22,497)	(29,585)	208,801
Issuance of Series F Preferred, net of issuance costs and conversion costs																									25,000			(650)				24,350
Issuance of common stock in rights offering																											44	34,956				35,000
Rights offering and conversion Series C and E costs																												(1,200)				(1,200)
Conversion of Series C to common stock																						(31,912)					26	31,886
Conversion of Series E to Series G																								(5,588)		5		5,583
Conversion of Preferred stock to common stock																									(25,000)	2	23	24,975
Implied noncash preferred dividend															2	9	10,490	(10,501)
Issuance of warrants to purchase common stock, net of issuance costs																												81				81
Exercise of stock options																												9				9
Amortization of stock-based compensation awards																												2,605				2,605
Comprehensive loss\ income:
Net income (loss)																													91,115			91,115
Change in unrealized gains on available for sale investment securities, net of reclassification adjustment and of income taxes																														53,169		53,169
Change in net unrealized loss from cash flow hedging instruments, net of income taxes																														1,499		1,499
Changes in deferred gain from termination of cash flow hedging instruments, net of income taxes																														(761)		(761)
Change in deferred loss on investments transferred to held to maturity from available for sale, net of income taxes																														103		103
Total comprehensive loss																																145,125
Preferred stock dividends declared									(1,915)	(1,915)								(335)	(335)								3	2,246				2,249
Preferred stock dividends and discounts accumulated			1,653		(6,895)	(5,242)
Balance at Dec. 31, 2011																					$ 102,042		$ 4			$ 9	$ 297	$ 423,674	$ (118,426)	$ 31,513	$ (29,585)	$ 409,528