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Leases - Schedule of Future Minimum Rental Payments under Noncancellable Operating Leases (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Leases [Abstract]  
2019 $ 48,200
2020 41,700
2021 32,500
2022 27,300
2023 21,400
Beyond 2023 $ 92,300