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Leases - Schedule of Lease Cost (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Leases [Abstract]      
Operating lease cost $ 18,985 $ 14,697 $ 7,972
Variable lease cost 8,179 6,408 4,497
Total lease costs $ 27,164 $ 21,105 $ 12,469