Consolidated Statements Of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Series A Convertible Preferred Stock [Member] Preferred Stock [Member]	Series C Preferred Stock [Member] Preferred Stock [Member]	Common Stock [Member]	Surplus[Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2008	$ 500		$ 7,454	$ 71,488	$ 62,476	$ (3,590)	$ (22,420)	$ 115,908
Common stock dividends					(482)			(482)
Preferred stock dividends					(1,810)			(1,810)
Deferred compensation distribution				(190)			278	88
Restricted stock awards forfeited				52			(54)	(2)
Share-based compensation				294				294
Issued 32,668 shares of series C preferred stock		32,668						32,668
Issued warrants to purchase 508,320 shares of common stock		(3,097)		3,097
Series C preferred stock discount accretion		619			(619)
Comprehensive income (loss)
Net income (loss)					(38,079)			(38,079)
Net change in fair value of securities classified as available-for-sale, net of income taxes and reclassification adjustments						4,029		4,029
Total comprehensive income (loss)								(34,050)
Balance at Dec. 31, 2009	500	30,190	7,454	74,741	21,486	439	(22,196)	112,614
Common stock dividends
Preferred stock dividends					(1,924)			(1,924)
Deferred compensation distribution				(75)			82	7
Share-based compensation				55				55
Series C preferred stock discount accretion		620			(620)
Comprehensive income (loss)
Net income (loss)					(65,803)			(65,803)
Net change in fair value of securities classified as available-for-sale, net of income taxes and reclassification adjustments						(2,028)		(2,028)
Total comprehensive income (loss)								(67,831)
Balance at Dec. 31, 2010	500	30,810	7,454	74,721	(46,861)	(1,589)	(22,114)	42,921
Common stock dividends
Preferred stock dividends					(2,012)			(2,012)
Deferred compensation distribution				(233)			237	4
Share-based compensation				70				70
Series C preferred stock discount accretion		619			(619)
Comprehensive income (loss)
Net income (loss)					(10,572)			(10,572)
Net change in fair value of securities classified as available-for-sale, net of income taxes and reclassification adjustments						2,158		2,158
Total comprehensive income (loss)								(8,414)
Balance at Dec. 31, 2011	$ 500	$ 31,429	$ 7,454	$ 74,558	$ (60,064)	$ 569	$ (21,877)	$ 32,569