CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	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, 2014	$ 1,740,005	$ (110,045)	$ 862	$ (1,026,117)	$ 498,702	$ 509	$ 1,103,916
Increase (Decrease) in Stockholders' Equity
Net Income	155,957					(55)	155,902
Foreign currency translation adjustments		(115,022)				(8)	(115,030)
Changes in unrecognized pension gains/losses and related amortization, net of tax		3,516					3,516
Changes in treasury locks, net of tax		19					19
Stock option exercises & restricted stock vestings			10	3,936	60,771		64,717
Cash dividends declared on common stock	(52,512)						(52,512)
Treasury stock purchased				(50,000)	50,000
Treasury stock retired	(628,481)		(200)	754,118	(125,437)
Non controlling interest repurchased					(476)	(148)	(624)
Balance at Sep. 30, 2015	1,214,969	(221,532)	672	(318,063)	483,560	298	1,159,904
Balance at Dec. 31, 2015	1,185,681	(262,347)	667	(270,052)	495,462	295	1,149,706
Increase (Decrease) in Stockholders' Equity
Net Income	156,009					8	156,017
Foreign currency translation adjustments		44,247				(8)	44,239
Changes in unrecognized pension gains/losses and related amortization, net of tax		2,511					2,511
Changes in treasury locks, net of tax		19					19
Stock option exercises & restricted stock vestings			9	17,195	58,037		75,241
Cash dividends declared on common stock	(56,597)						(56,597)
Common stock repurchased and retired	(75,996)		(11)		(8,783)		(84,790)
Balance at Sep. 30, 2016	$ 1,209,097	$ (215,570)	$ 665	$ (252,857)	$ 544,716	$ 295	$ 1,286,346