Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current:
Federal	$ (2,850)	$ 176	$ (28,979)
State	336	1,521	379
Foreign	13,601	(1,243)	(82,992)
Total current taxes	11,087	454	(111,592)
Deferred:
Federal	(7,240)	3,494	3,334
State	211	344	248
Foreign	(280)	(1,122)	(1,311)
Total deferred taxes	(7,309)	2,716	2,271
Total tax provision/(benefit)	$ 3,778	$ 3,170	$ (109,321)