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)	12,807				11,431		1,376
Cash dividends declared:
Common @ $0.205 per share	(16,548)				(16,548)
Noncontrolling interests	(600)						(600)
Translation adjustments, net of deferred income taxes of $(4,644) and $(6,508) in 2012 and 2011, respectively	34,812					34,568	244
Cash flow hedging instrument adjustments, net of deferred income taxes of $(215) and $(1,517) in 2012 and 2011, respectively	5,777					5,777
Contributions from noncontrolling interests	333						333
Pension liability adjustments, net of deferred income taxes of $793 and $2,105 in 2012 and 2011, respectively	(4,971)					(4,971)
Stock options exercised, 30,900 shares and 80,442 shares in 2012 and 2011, respectively	1,239	100		1,139
Vesting of restricted stock units and other, net 38,573 shares and 31,552 shares in 2012 and 2011, respectively	(1,008)	118	(1,008)	(118)
Amortization of unearned portion of stock-based compensation, net of forfeitures	944			944
Balances at Mar. 31, 2011	1,500,930	139,732	(738,114)	143,263	2,068,803	(150,558)	37,804
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)	(29,572)				(29,369)		(203)
Cash dividends declared:
Common @ $0.205 per share	(16,525)				(16,525)
Translation adjustments, net of deferred income taxes of $(4,644) and $(6,508) in 2012 and 2011, respectively	36,040					35,533	507
Cash flow hedging instrument adjustments, net of deferred income taxes of $(215) and $(1,517) in 2012 and 2011, respectively	762					762
Contributions from noncontrolling interests	7,935						7,935
Pension liability adjustments, net of deferred income taxes of $793 and $2,105 in 2012 and 2011, respectively	(5,418)					(5,418)
Marketable securities unrealized gains, net of deferred income taxes of $(4)	7					7
Stock options exercised, 30,900 shares and 80,442 shares in 2012 and 2011, respectively	542	39		503
Vesting of restricted stock units and other, net 38,573 shares and 31,552 shares in 2012 and 2011, respectively	(140)	72	(427)	215
Amortization of unearned portion of stock-based compensation, net of forfeitures	477			477
Balances at Mar. 31, 2012	$ 1,214,026	$ 140,025	$ (745,071)	$ 150,261	$ 1,950,340	$ (333,307)	$ 51,778