Commitments and Contingencies Future minimum lease payments for Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Future Minimum Payments for Operating Leases
2017	$ 974
2018	841
2019	467
Total payments	2,282
Deferred Rent Credit	193	$ 112
Deferred Rent Credit, Current	59	15
Rent expense	994	1,260	$ 1,483
Sublease rentals	0	(685)	(202)
Rent expense included in discontinued operations	0	0	(160)
Rent expense, net	$ 994	$ 575	$ 1,121