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Leases - Future Lease Commitments Under Operating Leases and Capital Leases (Detail)
$ in Thousands
Dec. 31, 2016
USD ($)
Operating Leased Assets [Line Items]  
Capital Leases, 2017 $ 9,261
Capital Leases, 2018 9,048
Capital Leases, 2019 8,643
Capital Leases, 2020 6,449
Capital Leases, 2021 4,489
Capital Leases, Thereafter 32,961
Capital Leases, Total 70,851
Capital Leases, Interest (22,596)
Capital Leases, Present value of minimum lease obligations 48,255
Capital Leases, Current maturities 5,867
Capital Leases, Long-term capitalized lease obligations 42,388
Operating Leases, 2017 51,072
Operating Leases, 2018 45,053
Operating Leases, 2019 34,043
Operating Leases, 2020 26,810
Operating Leases, 2021 18,952
Operating Leases, Thereafter 77,717
Operating Leases, Total 253,647
Used in Operations [Member]  
Operating Leased Assets [Line Items]  
Operating Leases, 2017 49,236
Operating Leases, 2018 43,231
Operating Leases, 2019 32,681
Operating Leases, 2020 25,723
Operating Leases, 2021 18,258
Operating Leases, Thereafter 76,745
Operating Leases, Total 245,874
Subleased to Others [Member]  
Operating Leased Assets [Line Items]  
Operating Leases, 2017 1,836
Operating Leases, 2018 1,822
Operating Leases, 2019 1,362
Operating Leases, 2020 1,087
Operating Leases, 2021 694
Operating Leases, Thereafter 972
Operating Leases, Total $ 7,773