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Commitments and Contingencies - Summary of Lease Liabilities and Right-of-Use Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Assets    
Operating $ 638 $ 636
Total leased assets 638  
Liabilities    
Operating lease liabilities, current 127 123
Operating lease liabilities. noncurrent 530 $ 528
Total lease liabilities $ 657  
Weighted-average remaining lease term (years) - operating leases 5 years 9 months 14 days  
Weighted-average discount rate - operating leases 7.00%