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Commitments and Contingencies - Information Related to Operating Lease (Parenthetical) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Commitments And Contingencies Disclosure [Abstract]        
Variable lease cost $ 96 $ 59 $ 184 $ 141