Income Taxes (Current and Deferred Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
U.S. federal	$ (18)	$ 484	$ (423)
Non-U.S.	9,194	5,732	13,459
U.S. state and local	(72)	100	212
Total current income tax provision (benefit)	9,104	6,316	13,248
Deferred:
U.S. federal	1,264	(400)	94
Non-U.S.	(4,658)	(4,294)	(1,854)
U.S. state and local	(1)	21	94
Total deferred income tax provision (benefit)	(3,395)	(4,673)	(1,666)
Total:
U.S. federal	1,246	84	(329)
Non-U.S.	4,536	1,438	11,605
U.S. state and local	(73)	121	306
Total income tax provision (benefit)	$ 5,709	$ 1,643	$ 11,582