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Leases - Schedule of Lease Costs (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Lessee, Lease, Description [Line Items]        
Amortization of leased assets $ 6 $ 292 $ 9 $ 585
Interest on lease liabilities 3 135 15 296
Net lease cost 89 558 224 1,142
Cost of sales        
Lessee, Lease, Description [Line Items]        
Operating lease cost 34 41 77 80
Selling, general and administrative expenses        
Lessee, Lease, Description [Line Items]        
Operating lease cost $ 46 $ 90 $ 123 $ 181