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Leases - Supplemental Lease 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 lease cost $ 1,453 $ 1,423 $ 2,908 $ 2,862
Variable lease cost 1,010 956 2,245 1,500
Net lease cost 2,463 2,379 5,153 4,362
Cash paid for amounts included in measurement of operating lease liabilities 1,691 1,524 3,399 3,069
Right-of-use assets obtained in exchange for new lease liabilities $ 0 $ 0 $ 0 $ 3,028
Weighted average remaining lease term 12 years 2 months 26 days 12 years 7 months 17 days 12 years 2 months 26 days 12 years 7 months 17 days
Weighted average discount rate 3.61% 3.59% 3.61% 3.59%