Income Taxes (Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 196	$ 0	$ 0
State	90	16	58
Foreign	367	308	189
Total current provision	653	324	247
Deferred:
Federal	0	(10)	9
State	1	(1)	1
Foreign	(5,215)	(141)	(10)
Total deferred benefit	(5,214)	(152)	0
Total provision (benefit) for income taxes	$ (4,561)	$ 172	$ 247