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Leases - Components of Lease Cost (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Leases [Abstract]        
Operating lease cost $ 3,014 $ 3,646 $ 9,020 $ 11,110
Loss due to remeasurement 1,627 0 1,627 0
Finance lease cost - amortization expense 241 174 681 592
Finance lease cost - interest expense 167 114 495 344
Short-term lease cost 52 30 105 80
Variable lease cost 205 102 498 137
Sublease income (155) (33) (459) (33)
Total $ 5,151 $ 4,033 $ 11,967 $ 12,230