Income Tax Expense (Income and Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S.	$ (44,114)	$ (9,799)	$ (4,123)
Foreign	(15,647)	(22,681)	(11,955)
Net loss before income tax	(59,761)	(32,480)	(16,078)
Assets, Current [Abstract]
Federal	50	(20)	51
State	100	181	138
Foreign	148	34	(300)
Total	298	195	(111)
Deferred Tax Assets, Net [Abstract]
Federal	(8,621)	(10)	(116)
State	(1,008)	0	(16)
Foreign	(6)	(247)	233
Total deferred	(9,635)	(257)	101
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Federal	(8,571)	(30)	(65)
State	(908)	181	122
Foreign	142	(213)	(67)
Income tax benefit	$ (9,337)	$ (62)	$ (10)