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Leases - Supplemental Lease Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Leases [Abstract]        
Operating lease cost $ 1,423 $ 1,551 $ 2,862 $ 3,017
Variable lease cost 956 711 1,500 1,489
Net lease cost 2,379 2,262 4,362 4,506
Cash paid for amounts included in measurement of operating lease liabilities 0 1,513 3,069 2,840
Right-of-use assets obtained in exchange for new operating lease liabilities $ 0 $ 0 $ 3,028 $ 1,013
Weighted average remaining lease term 12 years 7 months 17 days 12 years 11 months 12 days 12 years 7 months 17 days 12 years 11 months 12 days
Weighted average discount rate 3.59% 3.61% 3.59% 3.61%