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Leases - Classified of ROU assets and lease liabilities and weighted average remaining lease term (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2020
Leases [Abstract]      
Right-of-use assets - operating leases $ 3,309 $ 0
Current portion of operating lease liabilities 530  
Noncurrent portion of operating lease liabilities 2,964  
Total lease liabilities $ 3,494 $ 0
Weighted-average remaining lease term (in years): Operating leases 5 years 9 months 18 days  
Weighted-average discount rate: Operating leases 8.00%