Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net income (loss)	$ (510,157)	$ 104,770	$ (2,249)
Foreign currency translation adjustments, net	1,308	(124,191)	40,992
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	1,909	(2,930)	(6,776)
Net unrealized gain (loss) on nonderivative hedging instruments	(8,866)	15,825	(2,364)
Net hedging loss (gain) reclassified into net income (loss)	2,611	7,371	8,612
Pension plan benefit liability adjustment	852	(2,179)	(3,427)
Total other comprehensive income (loss), net of tax	(2,186)	(106,104)	37,037
Total comprehensive income (loss), net of tax	$ (512,343)	$ (1,334)	$ 34,788