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Commitments and Contingencies - Summary of Lease Liabilities and Right-of-Use Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Assets    
Operating $ 707 $ 781
Financing 71  
Total leased assets 778  
Liabilities    
Operating lease liabilities, current 139 147
Financing lease liabilities, current 79  
Operating lease liabilities. noncurrent 589 $ 646
Total lease liabilities $ 807  
Weighted-average remaining lease term (years) - operating leases 6 years 7 months 9 days  
Weighted-average remaining lease term (years) - finance leases 7 months 6 days  
Weighted-average discount rate - operating leases 7.90%  
Weighted-average discount rate - finance leases 5.00%