Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income [Member]	Noncontrolling Interest [Member]
Stockholders' Equity, Beginning Balance at Dec. 31, 2010	$ 369,137	$ 484	$ 348,289	$ (85,446)	$ 30,800	$ 75,010
Shares, Outstanding, Beginning Balance at Dec. 31, 2010		48,408,259
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	229,995			202,426		27,569
Pension Adjustments, Net of Tax					14,145
Unrealized Gains on Hedging Activities, Net of Tax					(1,442)
Currency Translation					(5,399)	2,374
Total Comprehensive Income	239,673
Performance Units Vested		11,101
Restricted Stock Grant		13,500
Minimum Tax Withholding Settlement	(194)		(194)
Compensation	106		106
Noncontrolling Interest Distribution	(12,040)					(12,040)
Stockholders' Equity, Ending Balance at Sep. 30, 2011	$ 596,682	$ 484	$ 348,201	$ 116,980	$ 38,104	$ 92,913
Shares, Outstanding, Ending Balance at Sep. 30, 2011		48,432,860