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Leases - Maturities of Non-cancelable Lease Liabilities (Details)
$ in Thousands
Sep. 30, 2019
USD ($)
Leases [Abstract]  
2019 $ 1,472
2020 5,504
2021 4,708
2022 4,079
2023 3,121
Thereafter 4,918
Total minimum payments 23,802
Less: interest 1,800
Present value of lease liabilities $ 22,002