Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Operating Leases
Operating lease right-of-use assets	$ 676	$ 794
Restructured lease right-of-use assets	54	107
Operating lease right-of-use assets, total	730	901
Operating lease liabilities	781	916
Restructured lease liabilities	85	168
Operating lease liabilities, total	866	1,084
Finance Leases
Property and equipment	13	13
Allowances for depreciation	(10)	(9)
Finance lease assets, net	3	4
Finance lease liabilities	$ 3	$ 4