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Leases - Summary of Lease Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Lease Costs        
Operating lease costs $ 424 $ 165 $ 843 $ 330
Short-term lease costs 2 1 5 4
Variable lease costs 54 39 110 92
Total lease costs $ 480 $ 205 $ 958 $ 426