Condensed Consolidating Financial Information Condensed Consolidating Statement of Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011 As Restated [Member]		Mar. 31, 2012 Parent [Member]	Mar. 31, 2011 Parent [Member] As Restated [Member]	Mar. 31, 2012 Guarantor Subsidiaries [Member]	Mar. 31, 2011 Guarantor Subsidiaries [Member] As Restated [Member]	Mar. 31, 2012 Non-Guarantor Subsidiaries [Member]	Mar. 31, 2011 Non-Guarantor Subsidiaries [Member] As Restated [Member]	Mar. 31, 2012 Consolidation, Eliminations [Member]	Mar. 31, 2011 Consolidation, Eliminations [Member] As Restated [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	$ 4,699	$ 48,113	[1]	$ 4,699	$ 48,113	$ 7,475	$ 35,275	$ 2,852	$ 2,903	$ (10,327)	$ (38,178)
Foreign currency translation (losses) gains, net of tax	2,586	1,269	[1]	2,586	1,269	1,114	113	1,600	(2,036)	(2,714)	1,923
Unrealized gains (losses) on cash flow hedges, net of tax	1,700	165	[1]	1,700	165	0	0	0	0	0	0
Reclassification adjustment for gains (losses) in net income	1,287	24	[1]	1,287	24	0	0	0	0	0	0
Other comprehensive (loss) income	5,573	1,458	[1]	5,573	1,458	1,114	113	1,600	(2,036)	(2,714)	1,923
Net change in other comprehensive (loss) income	$ 10,272	$ 49,571	[1]	$ 10,272	$ 49,571	$ 8,589	$ 35,388	$ 4,452	$ 867	$ (13,041)	$ (36,255)

[1] (1) As restated - See Note 14 “Restatement of Previously Issued Financial Statements” of Notes to Condensed Consolidated Financial Statements.See notes to Condensed Consolidated Financial Statements.