CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands	Total	Common Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock	Noncontrolling Interest
Beginning Balance at Dec. 31, 2009	$ 1,585,074	$ 42,033	$ 277,050	$ 1,431,878	$ (34,120)	$ (136,600)	$ 4,833
Beginning Balance, Shares at Dec. 31, 2009		42,033				2,278
Net income (loss)	202,455			201,094			1,361
Cash dividends ($1.36, $1.36, $1.36 per share) during 2010, 2011, 2012 respectively	(54,312)			(54,312)
Other comprehensive (loss) income	(17,713)				(17,760)		47
Convertible debt discount, net of tax of $29,532	51,702		51,702
Call options, net of tax of $(32,293)	(58,602)		(58,602)
Warrants	60,775		60,775
Distributions to noncontrolling interest shareholders	(1,974)						(1,974)
Deconsolidation of VIE	(112)			253			(365)
Shares issued under compensation plans	19,745	212	18,231			1,302
Shares issued under compensation plans, Shares		212				(22)
Deferred compensation	240					240
Deferred compensation, Shares						(6)
Ending Balance at Dec. 31, 2010	1,787,278	42,245	349,156	1,578,913	(51,880)	(135,058)	3,902
Ending Balance, Shares at Dec. 31, 2010		42,245				2,250
Net income (loss)	324,967			323,329			1,638
Cash dividends ($1.36, $1.36, $1.36 per share) during 2010, 2011, 2012 respectively	(55,136)			(55,136)
Other comprehensive (loss) income	(107,870)				(107,473)		(397)
Disposition of noncontrolling interest	(2,830)						(2,830)
Distributions to noncontrolling interest shareholders	(118)						(118)
Shares issued under compensation plans	36,355	678	31,848			3,829
Shares issued under compensation plans, Shares		678				(63)
Deferred compensation	137		(39)			176
Deferred compensation, Shares						(4)
Ending Balance at Dec. 31, 2011	1,982,783	42,923	380,965	1,847,106	(159,353)	(131,053)	2,195
Ending Balance, Shares at Dec. 31, 2011		42,923				2,183
Net income (loss)	(189,102)			(190,057)			955
Cash dividends ($1.36, $1.36, $1.36 per share) during 2010, 2011, 2012 respectively	(55,589)			(55,589)
Other comprehensive (loss) income	27,238				27,305		(67)
Distributions to noncontrolling interest shareholders	(496)						(496)
Shares issued under compensation plans	16,597	179	13,429			2,989
Shares issued under compensation plans, Shares		179				(49)
Deferred compensation	106		(10)			116
Deferred compensation, Shares						(4)
Ending Balance at Dec. 31, 2012	$ 1,781,537	$ 43,102	$ 394,384	$ 1,601,460	$ (132,048)	$ (127,948)	$ 2,587
Ending Balance, Shares at Dec. 31, 2012		43,102				2,130