Income Taxes Income Tax Expense (Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ (700)	$ (9,411)	$ 3,244
State	300	716	580
Foreign	11,043	21,154	13,008
Current Income Tax Expense (Benefit)	10,643	12,459	16,832
Deferred:
Federal	3,011	3,968	(3,474)
Foreign	(994)	348	(4,078)
Deferred Income Tax Expense (Benefit)	2,017	4,316	(7,552)
Income Taxes	$ 12,660	$ 16,775	$ 9,280