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Commitments and Contingencies - Lease Cost (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]    
Minimum operating lease payments $ 515 $ 663
Variable operating lease payments 163 276
Short-term operating lease payments 174 124
ROU amortization of finance leases 109 109
Interest expense of finance leases 24 37
Total lease cost $ 985 $ 1,209
Weighted-average remaining lease term of operating leases 7 years 10 months 24 days 4 years
Weighted-average remaining lease term of finance leases 1 year 1 year 9 months 18 days
Weighted-average discount rate of operating leases 4.36% 4.44%
Weighted-average discount rate of finance leases 3.50% 3.50%