Income Taxes - Components of Income Tax Benefit/(Expense) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal									$ 127	$ (24)	$ (5)
State									(6)	(5)	(5)
Foreign									(86)	(183)	656
Current Income Tax Expense (Benefit), Total									35	(212)	646
Deferred:
Federal									328		6,821
Foreign									(62)	71	88
Deferred Income Tax Expense (Benefit), Total									266	71	6,909
Total:
Federal									455	(24)	6,816
State									(6)	(5)	(5)
Foreign									(148)	(112)	744
Income tax benefit/(provision)	$ 280	$ (129)	$ (16)	$ 166	$ 234	$ (79)	$ 809	$ (1,104)	$ 301	$ (141)	$ 7,555