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, 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)	10,769				9,746		1,023
Cash dividends declared:
Common @ $0.615 per share	(49,597)				(49,597)
Noncontrolling interests	(2,264)						(2,264)
Translation adjustments, net of deferred income taxes of $(1,094) and $(4,618) for the nine months ended September 30, 2013 and 2012, respectively	7,733					7,479	254
Cash flow hedging instrument adjustments, net of deferred income taxes of $915 and $(653) in 2013 and 2012, respectively	1,941					1,941
Contributions from noncontrolling interests	8,602						8,602
Sale of investment in consolidated subsidiary	(704)						(704)
Pension liability adjustments, net of deferred income taxes of $2,109 and $1,514 and $(2,439) and $189 for the three and nine months ended September 30, 2013 and 2012, respectively	(1,294)					(1,294)
Marketable securities unrealized gains, net of deferred income taxes of $(13) and $(2) for 2013 and 2012, respectively	3					3
Stock options exercised, 20,000 shares and 38,900 shares in 2013 and 2012, respectively	710	49		661
Vesting of restricted stock units and other, net 62,039 shares and 68,558 shares in 2013 and 2012, respectively	515	117	(561)	959
Amortization of unearned portion of stock-based compensation, net of forfeitures	2,257			2,257
Balances at Sep. 30, 2012	1,198,589	140,080	(745,205)	152,943	1,956,383	(356,062)	50,450
Balances at Dec. 31, 2012	861,624	140,080	(745,205)	152,645	1,675,490	(411,168)	49,782
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(195,118)				(202,613)		7,495
Cash dividends declared:
Common @ $0.615 per share	(49,668)				(49,668)
Noncontrolling interests	(2,880)						(2,880)
Translation adjustments, net of deferred income taxes of $(1,094) and $(4,618) for the nine months ended September 30, 2013 and 2012, respectively	(33,877)					(34,029)	152
Cash flow hedging instrument adjustments, net of deferred income taxes of $915 and $(653) in 2013 and 2012, respectively	(2,160)					(2,076)	(84)
Contributions from noncontrolling interests	4,622						4,622
Purchase of subsidiary shares from noncontrolling interest	(185)			(292)			107
Pension liability adjustments, net of deferred income taxes of $2,109 and $1,514 and $(2,439) and $189 for the three and nine months ended September 30, 2013 and 2012, respectively	17,587					17,587
Marketable securities unrealized gains, net of deferred income taxes of $(13) and $(2) for 2013 and 2012, respectively	21					21
Stock options exercised, 20,000 shares and 38,900 shares in 2013 and 2012, respectively	400	25		375
Vesting of restricted stock units and other, net 62,039 shares and 68,558 shares in 2013 and 2012, respectively	1,335	119	(841)	2,057
Amortization of unearned portion of stock-based compensation, net of forfeitures	3,632			3,632
Balances at Sep. 30, 2013	$ 605,333	$ 140,224	$ (746,046)	$ 158,417	$ 1,423,209	$ (429,665)	$ 59,194