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Commitments and Contingencies - Summary of Lease Liabilities and Right-of-Use Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Assets    
Operating $ 671 $ 781
Financing 39  
Total leased assets 710  
Liabilities    
Operating lease liabilities, current 140 147
Financing lease liabilities, current 39  
Operating lease liabilities. noncurrent 545 $ 646
Total lease liabilities $ 724  
Weighted-average remaining lease term (years) - operating leases 6 years 6 months 10 days  
Weighted-average remaining lease term (years) - finance leases 4 months 13 days  
Weighted-average discount rate - operating leases 7.90%  
Weighted-average discount rate - finance leases 5.00%