CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, unless otherwise specified	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Common Stock Par Value	Treasury Stock	Capital in Excess of Par Value	Non-Controlling Interest	Total
Balance at Dec. 31, 2013	$ 1,619,419	$ 109,751	$ 853	$ (744,213)	$ 493,947	$ 551	$ 1,480,308
Increase (Decrease) in Stockholders' Equity
Net Income	48,389					19	48,408
Foreign currency translation adjustments		573				(10)	563
Changes in unrecognized pension gains/losses and related amortization, net of tax		718					718
Changes in treasury locks, net of tax		6					6
Stock option exercises & restricted stock vestings			2	1	18,245		18,248
Cash dividends declared on common stock	(16,366)						(16,366)
Treasury stock purchased				(12,999)			(12,999)
Balance at Mar. 31, 2014	1,651,442	111,048	855	(757,211)	512,192	560	1,518,886
Balance at Dec. 31, 2014	1,740,005	(110,045)	862	(1,034,728)	507,313	509	1,103,916
Increase (Decrease) in Stockholders' Equity
Net Income	45,171					(72)	45,099
Foreign currency translation adjustments		(139,246)					(139,246)
Changes in unrecognized pension gains/losses and related amortization, net of tax		1,169					1,169
Changes in treasury locks, net of tax		6					6
Stock option exercises & restricted stock vestings			5	1	33,250		33,256
Cash dividends declared on common stock	(17,402)						(17,402)
Balance at Mar. 31, 2015	$ 1,767,774	$ (248,116)	$ 867	$ (1,034,727)	$ 540,563	$ 437	$ 1,026,798