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Leases - Schedule by Year of Future Minimum Lease Payments for Noncancelable Operating Leases (Detail)
$ in Thousands
Dec. 31, 2018
USD ($)
Leases [Abstract]  
2019 $ 238,954
2020 219,351
2021 202,205
2022 172,267
2023 145,705
Thereafter 510,741
Total minimum payment required $ 1,489,223