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Leases - Summary of Maturity of Operating Lease Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Leases [Abstract]    
Remainder of 2021 $ 277  
2022 1,127  
2023 382  
2024 2  
Total maturities 1,788  
Less: Amount representing interest (80)  
Present value of operating lease liability 1,708  
Less: Current portion of operating lease liability (1,052) $ (985)
Operating lease liabilities, net of current portion $ 656 $ 1,454