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Leases - Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Leases [Abstract]        
Operating cash flows from operating leases $ 243 $ 237 $ 726 $ 706
ROU assets obtained in exchange for lease liabilities $ 3,061 $ 0 $ 3,061 $ 0