Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010 As Restated [Member]		Dec. 31, 2009 As Restated [Member]
Current taxes:
Federal	$ 2,882	$ 2,890		$ 2,500
State	250	(1,883)		859
Foreign	1,559	4,357		6,890
Total current taxes	4,691	5,364		10,249
Deferred taxes:
Federal	14,548	(5,516)		10,244
State	1,233	(2,232)		14
Foreign	(541)	(1,678)		(3,321)
Total deferred taxes	15,240	(9,426)		6,937
Income tax provision	$ 19,931	$ (4,062)	[1]	$ 17,186	[1]

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