Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total Attributed To Shareholders [Member]	Non-controlling Interest [Member]	Redeemable Non-controlling Interest [Member]
Beginning Balance at Dec. 31, 2009	$ 29,730	$ 58	$ 902,962	$ (873,145)	$ (145)		$ 29,730
Beginning Balance, shares at Dec. 31, 2009		5,824,388
Net income	9,642			9,642			9,642
Net unrealized gain on securities available-for-sale	(163)				(163)		(163)
Preferred stockholder dividend	(3,289)		(3,289)				(3,289)
Preferred stock conversion	9,863	4	9,859				9,863
Preferred stock conversion, shares		378,446
Repurchase of common shares	(924)					(924)	(924)
Repurchase of common shares, shares		(20,000)				20,000
Issuance of common stock related to employee stock transactions	146	1	145				146
Issuance of common stock related to employee stock transactions, shares		68,987
Taxes paid on stock-based compensation	(407)		(407)				(407)
Stock-based compensation	3,672		3,672				3,672
Ending Balance at Dec. 31, 2010	48,270	63	912,942	(863,503)	(308)	(924)	48,270
Ending Balance, shares at Dec. 31, 2010		6,251,821				20,000
Net income	145,420			145,420			145,420
Net unrealized gain on securities available-for-sale	294				294		294
Preferred stockholder dividend	(9,482)		(9,482)				(9,482)
Repurchase of common shares	(7,870)					(7,870)	(7,870)
Repurchase of common shares, shares		(135,000)				135,000
Issuance of common stock related to employee stock transactions	1,720		1,720				1,720
Issuance of common stock related to employee stock transactions, shares		71,474
Taxes paid on stock-based compensation	(720)		(720)				(720)
Stock-based compensation	5,523		5,523				5,523
Ending Balance at Dec. 31, 2011	183,155	63	909,983	(718,083)	(14)	(8,794)	183,155
Ending Balance, shares at Dec. 31, 2011		6,188,295				155,000
Net income	37,773			37,672			37,672	(3)	104
Net unrealized gain on securities available-for-sale	(273)				(273)		(273)
Preferred stock conversion	35,217	14	35,203				35,217
Preferred stock conversion, shares		1,349,300
Contributions of noncontrolling interests									3,059
Repurchase of common shares	(8,940)					(8,940)	(8,940)
Repurchase of common shares, shares		(90,000)				90,000
Issuance of common stock related to employee stock transactions	3,188	4	3,184				3,188
Issuance of common stock related to employee stock transactions, shares		379,079
Taxes paid on stock-based compensation	(11,951)		(11,951)				(11,951)
Stock-based compensation	6,406		6,406				6,406
Ending Balance at Dec. 31, 2012	$ 244,471	$ 81	$ 942,825	$ (680,411)	$ (287)	$ (17,734)	$ 244,474	$ (3)	$ 3,163
Ending Balance, shares at Dec. 31, 2012		7,826,674				245,000