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Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease, right-of-use asset $ 794 $ 1,289
Restructured lease, right-of-use asset 107 322
Operating lease right-of-use assets, total 901 1,611
Operating lease liabilities 916 1,480
Restructured lease liabilities 168 488
Operating lease liabilities, total 1,084 1,968
Property and equipment 13 13
Allowances for depreciation (9) (5)
Finance lease assets, net 4 8
Finance lease liabilities $ 4 $ 6