Restatement of Previously Issued Financial Statements (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Net income	$ 82,688	$ 2,141		$ 27,575
Foreign currency translation adjustment, net of tax	(6,238)	4,335		5,281
Other comprehensive income	(10,430)
Comprehensive (loss) income	72,258
Scenario, Previously Reported [Member]
Net income		17,718		26,339
Foreign currency translation adjustment, net of tax		5,338		5,284
Other comprehensive income		5,713		5,284
Comprehensive (loss) income		23,431		31,623
Restatement Adjustment [Member]
Net income		(15,577)		1,236
Foreign currency translation adjustment, net of tax		(1,004)		(3)
Other comprehensive income		(1,003)		(3)
Comprehensive (loss) income		(16,580)		1,233
As Restated [Member]
Net income		2,141	[1]	27,575	[1]
Foreign currency translation adjustment, net of tax		4,335	[1]	5,281	[1]
Other comprehensive income		4,710	[1]	5,281	[1]
Comprehensive (loss) income		$ 6,851	[1]	$ 32,856	[1]

[1] As restated - See Note 23 “Restatement of Previously Issued Financial Statements” of Notes to Consolidated Financial Statements.