Income Taxes - Income Taxes Provision (Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Federal, current	$ (258)	$ (190)	$ 0
Federal, deferred	222	6,873	(2,430)
Federal, total	(36)	6,683	(2,430)
State, current	6	7	6
State, deferred	88	1,653	206
State, total	94	1,660	212
Foreign, current	2,022	2,135	3,089
Foreign, deferred	311	(95)	(1,216)
Foreign, total	2,333	2,040	1,873
Valuation allowance	(239)	(8,034)	2,201
Tax provision	$ 2,152	$ 2,349	$ 1,856