Leases - Components of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2019
Leases [Abstract]
Sublease income	$ (25)		$ (25)
Lease cost	152		147
Operating lease cost, net	127		122
Sublease income	(68)		(112)
Lease cost	61		109
Restructured lease cost, net	(7)		(3)
Interest of lease liabilities	0	$ 0	1	$ 1
Total lease cost, net	$ 120		$ 120