Leases - Components of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Sublease income	$ (29)	$ (25)	$ (54)	$ (50)
Lease cost	151	171	303	318
Operating lease cost, net	122	146	249	268
Sublease income	(68)	(111)	(136)	(223)
Lease cost	60	107	121	216
Restructured lease income, net	(8)	(4)	(15)	(7)
Interest of lease liabilities	0	1	0	1
Total lease cost, net	$ 114	$ 143	$ 234	$ 262