CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands	Total	Comprehensive Income	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Common Stock Par Value	Treasury Stock	Capital in Excess of Par Value	Non-Controlling Interest
Balance at Dec. 31, 2009	$ 1,253,636		$ 1,150,017	$ 186,099	$ 806	$ (356,548)	$ 272,471	$ 791
Increase (Decrease) in Stockholders' Equity
Net income (loss)	132,875	132,875	132,700					175
Foreign currency translation adjustments	(42,379)	(42,379)		(42,391)				12
Changes in unrecognized pension gains/losses and related amortization, net of tax	575	575		575
Changes in treasury locks, net of tax	62	62		62
Net gain on Derivatives, net of tax	1	1		1
Comprehensive income		91,134
Stock option exercises & restricted stock vestings	37,236				8		37,228
Cash dividends declared on common stock	(32,412)		(32,412)
Treasury stock purchased	(58,785)					(58,785)
Balance at Sep. 30, 2010	1,290,809		1,250,305	144,346	814	(415,333)	309,699	978
Balance at Dec. 31, 2010	1,279,774		1,279,013	123,766	817	(443,019)	318,346	851
Increase (Decrease) in Stockholders' Equity
Net income (loss)	144,998	144,998	145,063					(65)
Foreign currency translation adjustments	(5,256)	(5,256)		(5,274)				18
Changes in unrecognized pension gains/losses and related amortization, net of tax	1,213	1,213		1,213
Changes in treasury locks, net of tax	65	65		65
Net gain on Derivatives, net of tax	1	1		1
Comprehensive income		141,021
Stock option exercises & restricted stock vestings	34,147				8	69	34,070
Cash dividends declared on common stock	(38,769)		(38,769)
Non-Controlling interest distribution	(27)							(27)
Treasury stock purchased	(79,640)					(79,640)
Balance at Sep. 30, 2011	$ 1,336,506		$ 1,385,307	$ 119,771	$ 825	$ (522,590)	$ 352,416	$ 777