Income Taxes - Operating Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Federal
Gross operating loss carryforwards
Operating loss carryforwards	$ 485
State
Gross operating loss carryforwards
Operating loss carryforwards	$ 10,560
State | Tax Year 2021 And thereafter
Gross operating loss carryforwards
Percentage of operating loss carryforwards	92.00%
Foreign
Gross operating loss carryforwards
Operating loss carryforwards	$ 16,768
Foreign | No expiration
Gross operating loss carryforwards
Percentage of operating loss carryforwards	99.00%