Condensed Consolidated Statements of Equity (Unaudited) (USD $) In Thousands	Total	Common in Treasury Shares	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Beginning balance at Dec. 31, 2009	$ 560,495	$ (171,567)	$ 93,436	$ 331,376	$ 357,128	$ (60,147)	$ 10,269
Beginning balance, shares at Dec. 31, 2009		7,375
Net income (loss)	6,782				7,032		(250)
Other comprehensive income (loss), net of tax:
Foreign currency translation	(25,695)					(25,726)	31
Postretirement benefit liabilities	(3,035)					(3,035)
Raw material commodity swaps	(107)					(107)
Interest rate swaps	1,930					1,930
Total comprehensive income (loss)	(20,125)
Cash dividends:
Preferred	(330)				(330)
Stock-based compensation transactions, shares		(70)
Stock-based compensation transactions	1,850	2,838		(988)
Distributions to noncontrolling interests	(527)						(527)
Ending balance at Jun. 30, 2010	541,363	(168,729)	93,436	330,388	363,830	(87,085)	9,523
Ending balance, shares at Jun. 30, 2010		7,305
Beginning balance at Dec. 31, 2010	574,180	(164,257)	93,436	323,015	362,164	(50,949)	10,771
Beginning balance, shares at Dec. 31, 2010		7,242
Net income (loss)	42,812				42,279		533
Other comprehensive income (loss), net of tax:
Foreign currency translation	10,451					10,335	116
Postretirement benefit liabilities	2,968					2,968
Total comprehensive income (loss)	56,231
Cash dividends:
Preferred	(165)				(165)
Stock-based compensation transactions, shares		(376)
Stock-based compensation transactions	5,090	10,583		(5,493)
Distributions to noncontrolling interests	(688)						(688)
Ending balance at Jun. 30, 2011	$ 634,648	$ (153,674)	$ 93,436	$ 317,522	$ 404,278	$ (37,646)	$ 10,732
Ending balance, shares at Jun. 30, 2011		6,866