CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock	Noncontrolling Interest
Beginning Balance at Dec. 31, 2010	$ 1,787,278	$ 42,245	$ 349,156	$ 1,578,913	$ (51,880)	$ (135,058)	$ 3,902
Beginning Balance (in shares) at Dec. 31, 2010		42,245,000				2,250,000
Net income (loss)	324,967			323,329			1,638
Cash dividends ($1.36 per share)	(55,136)			(55,136)
Other comprehensive loss	(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		678,000				(63,000)
Deferred compensation	137		(39)			176
Deferred compensation, shares						(4,000)
Ending Balance at Dec. 31, 2011	1,982,783	42,923	380,965	1,847,106	(159,353)	(131,053)	2,195
Ending Balance (in shares) at Dec. 31, 2011		42,923,000				2,183,000
Net income (loss)	(189,102)			(190,057)			955
Cash dividends ($1.36 per share)	(55,589)			(55,589)
Other comprehensive loss	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		179,000				(49,000)
Deferred compensation	106		(10)			116
Deferred compensation, shares						(4,000)
Ending Balance at Dec. 31, 2012	1,781,537	43,102	394,384	1,601,460	(132,048)	(127,948)	2,587
Ending Balance (in shares) at Dec. 31, 2012		43,102,000				2,130,000
Net income (loss)	151,748			150,881			867
Cash dividends ($1.36 per share)	(55,917)			(55,917)
Other comprehensive loss	20,964				21,193		(229)
Distributions to noncontrolling interest shareholders	(736)						(736)
Shares issued under compensation plans	18,374	141	14,963			3,270
Shares issued under compensation plans, shares		141,000				(65,000)
Deferred compensation	46		(9)			55
Deferred compensation, shares						(1,000)
Ending Balance at Dec. 31, 2013	$ 1,916,016	$ 43,243	$ 409,338	$ 1,696,424	$ (110,855)	$ (124,623)	$ 2,489
Ending Balance (in shares) at Dec. 31, 2013		43,243,000				2,064,000