Condensed Consolidated Statements Of Shareholders' Equity (USD $) In Thousands	Total	Series A Preferred Stock [Member]	Preferred Stock [Member]	Preferred Stock [Member] Series A Preferred Stock [Member]	Common Stock [Member]	Common Stock [Member] Series A Preferred Stock [Member]	Paid-In Capital [Member]	Paid-In Capital [Member] Series A Preferred Stock [Member]	Retained Earnings [Member]	Retained Earnings [Member] Series A Preferred Stock [Member]	Treasury Stock [Member]	Treasury Stock [Member] Series A Preferred Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Series A Preferred Stock [Member]	Noncontrolling Interest [Member]	Noncontrolling Interest [Member] Series A Preferred Stock [Member]
Beginning Balance at Dec. 31, 2010	$ 1,778,879		$ 28,939		$ 907		$ 1,160,690		$ 741,870		$ (149,462)		$ (13,709)		$ 9,644
Net income (loss)	110,994								110,995						(1)
Other comprehensive income (loss)	(19,418)												(19,418)
Dividends declared on common stock of $0.11 and $0.25 per share during 2012 and 2011, respectively	(9,607)								(9,607)				0
Subsidiary preferred stock dividends $0.6468 per share		(1,846)								(1,846)
Dividends declared on Series A preferred stock $63.75 per share	(647)								(647)
Disolution of joint venture	(66)														(66)
Common stock warrants repurchased	(16,246)						(16,246)
Exercise of stock options	103						(209)		0		312
Net shares acquired related to employee share-based compensation plans	(1,342)						3				(1,345)
Stock-based compensation expense	4,452						712		(4,698)		8,438
Issuance of common stock	590						197		(326)		719
Ending Balance at Sep. 30, 2011	1,845,846		28,939		907		1,145,147		835,741		(141,338)		(33,127)		9,577
Beginning Balance at Dec. 31, 2011	1,845,774		28,939		907		1,145,346		865,427		(134,641)		(60,204)
Net income (loss)	125,171								125,171
Other comprehensive income (loss)	30,927												30,927
Dividends declared on common stock of $0.11 and $0.25 per share during 2012 and 2011, respectively	(21,906)								(21,906)
Dividends declared on Series A preferred stock $63.75 per share		(1,845)								(1,845)
Common stock warrants repurchased	(385)						(385)
Exercise of stock options	856						(1,711)				2,567
Net shares acquired related to employee share-based compensation plans	(2,008)										(2,008)
Stock-based compensation expense	6,687						1,735		(4,253)		9,205
Issuance of common stock	407						407
Ending Balance at Sep. 30, 2012	$ 1,983,678		$ 28,939		$ 907		$ 1,145,392		$ 962,594		$ (124,877)		$ (29,277)