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Commitments and Contingencies - Future Minimum Lease Commitments on Non-Cancelable Operating Leases, Lease Income and Sublease Income (Details)
$ in Thousands
Sep. 30, 2019
USD ($)
Net Payments  
2020 $ 8,898
2021 5,845
2022 3,845
2023 3,166
2024 2,520
Thereafter 4,249
Operating Leases, Future Minimum Payments Due, Total $ 28,523