Consolidated Statements of Stockholders' Equity Statement (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	170,488			145,429		25,059
Pension Adjustments, Net of Tax					943
Unrealized Gains on Hedging Activities, Net of Tax					2,492
Currency Translation					29,191	1,307
Total Comprehensive Income	204,421
Performance Units Vested		5,057
Restricted Stock Grant		13,500
Minimum Tax Withholding Settlement	(63)		(63)
Compensation	41		41
Noncontrolling Interest Distribution	(10,135)					(10,135)
Stockholders' Equity, Ending Balance at Jun. 30, 2011	$ 563,401	$ 484	$ 348,267	$ 59,983	$ 63,426	$ 91,241
Shares, Outstanding, Ending Balance at Jun. 30, 2011		48,426,816