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, 2011	$ 1,982,783	$ 42,923	$ 380,965	$ 1,847,106	$ (159,353)	$ (131,053)	$ 2,195
Beginning Balance (in shares) at Dec. 31, 2011		42,923				2,183
Net income (loss)	(283,508)			(283,735)			227
Cash dividends ($0.34, 0.34 per share) during 2012, 2013 respectively	(13,866)			(13,866)
Other comprehensive income (loss)	34,121				34,043		78
Shares issued under compensation plans	2,210	33	46			2,131
Shares issued under compensation plans, shares		33				(35)
Deferred compensation	106		(10)			116
Deferred compensation, shares						(4)
Ending Balance at Apr. 01, 2012	1,721,846	42,956	381,001	1,549,505	(125,310)	(128,806)	2,500
Ending Balance (in shares) at Apr. 01, 2012		42,956				2,144
Beginning Balance at Dec. 31, 2012	1,781,537	43,102	394,384	1,601,460	(132,048)	(127,948)	2,587
Beginning Balance (in shares) at Dec. 31, 2012		43,102				2,130
Net income (loss)	27,239			27,038			201
Cash dividends ($0.34, 0.34 per share) during 2012, 2013 respectively	(13,964)			(13,964)
Other comprehensive income (loss)	(25,435)				(25,476)		41
Shares issued under compensation plans	5,654	79	3,173			2,402
Shares issued under compensation plans, shares		79				(49)
Deferred compensation	46		(9)			55
Deferred compensation, shares						(1)
Ending Balance at Mar. 31, 2013	$ 1,775,077	$ 43,181	$ 397,548	$ 1,614,534	$ (157,524)	$ (125,491)	$ 2,829
Ending Balance (in shares) at Mar. 31, 2013		43,181				2,080