Leases - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2019	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease, discount rate		7.25%
Operating lease, weighted average remaining lease term		1 year 7 months 6 days
Restructured lease, weighted average remaining lease term		6 months
Finance lease, weighted average remaining lease term		1 year 3 months 18 days
Restricted cash held in other assets		$ 342	$ 342
Operating lease, impairment loss	$ 200
2017 Restructuring Plan | Restructuring Liability
Lessee, Lease, Description [Line Items]
Reclassification upon adoption of Topic 842	$ 300		$ (273)