CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock Issued	Common Stock Treasury	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balances at Dec. 31, 2010	$ 1,468,145	$ 139,514	$ (737,106)	$ 141,298	$ 2,073,920	$ (185,932)	$ 36,451
Increase (Decrease) in Stockholders' Equity
Net income (loss)	51,547				49,158		2,389
Cash dividends declared:
Common @ $0.41 per share	(33,092)				(33,092)
Noncontrolling interests	(761)						(761)
Translation adjustments, net of deferred income taxes of $2,357 and $(7,473) in 2012 and 2011, respectively	54,232					53,473	759
Cash flow hedging instrument adjustments, net of deferred income taxes of $(895) and $(1,742) in 2012 and 2011, respectively	6,688					6,688
Contributions from noncontrolling interests	1,181						1,181
Pension liability adjustments, net of deferred income taxes of $(1,325) and $947 in 2012 and 2011, respectively	(2,236)					(2,236)
Marketable securities unrealized gains, net of deferred income taxes of $(1) and $2 for 2012 and 2011, respectively	(3)					(3)
Stock options exercised, 38,900 shares and 86,022 shares in 2012 and 2011, respectively	1,314	108		1,206
Vesting of restricted stock units and other, net 48,519 shares and 92,630 shares in 2012 and 2011, respectively	226	151	(910)	985
Amortization of unearned portion of stock-based compensation, net of forfeitures	1,874			1,874
Balances at Jun. 30, 2011	1,549,115	139,773	(738,016)	145,363	2,089,986	(128,010)	40,019
Balances at Dec. 31, 2011	1,219,918	139,914	(744,644)	149,066	1,996,234	(364,191)	43,539
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(16,299)				(16,658)		359
Cash dividends declared:
Common @ $0.41 per share	(33,058)				(33,058)
Noncontrolling interests	(2,068)						(2,068)
Translation adjustments, net of deferred income taxes of $2,357 and $(7,473) in 2012 and 2011, respectively	(31,079)					(30,708)	(371)
Cash flow hedging instrument adjustments, net of deferred income taxes of $(895) and $(1,742) in 2012 and 2011, respectively	2,701					2,701
Contributions from noncontrolling interests	8,490						8,490
Pension liability adjustments, net of deferred income taxes of $(1,325) and $947 in 2012 and 2011, respectively	8,849					8,849
Marketable securities unrealized gains, net of deferred income taxes of $(1) and $2 for 2012 and 2011, respectively	2					2
Stock options exercised, 38,900 shares and 86,022 shares in 2012 and 2011, respectively	710	49		661
Vesting of restricted stock units and other, net 48,519 shares and 92,630 shares in 2012 and 2011, respectively	115	92	(561)	584
Amortization of unearned portion of stock-based compensation, net of forfeitures	1,308			1,308
Balances at Jun. 30, 2012	$ 1,159,589	$ 140,055	$ (745,205)	$ 151,619	$ 1,946,518	$ (383,347)	$ 49,949