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Commitments and Contingencies - Schedule of Undiscounted Minimum Rental Commitments Under Non-cancelable Leases (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
Operating Leases, remaining 2019 $ 5,192
Operating Leases, 2020 7,008
Operating Leases, 2021 7,064
Operating Leases, 2022 6,735
Operating Leases, 2023 5,347
Operating Leases, Thereafter 13,934
Operating Leases, Total $ 45,280