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Leases - Maturities of Non-cancelable Lease Liabilities (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Leases [Abstract]  
2019 $ 2,840
2020 5,309
2021 4,678
2022 4,076
2023 3,106
Thereafter 4,785
Total minimum payments 24,794
Less: interest 1,538
Present value of lease liabilities $ 23,256