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Leases - (Schedule of Maturity Analysis of Operating Lease Liabilities) (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Operating Lease Liabilities Payments Due Rolling Maturity [Abstract]  
2019 $ 12,630
2020 22,883
2021 18,737
2022 13,290
2023 8,613
Thereafter 9,046
Minimum lease payments 85,199
Imputed interest 10,564
Present value of minimum operating lease payments $ 74,635