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Leases - Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Leases [Abstract]        
Operating cash flows from operating leases $ 243 $ 236 $ 483 $ 469