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Note Rental expense and commitments (Detail)
$ in Thousands
Dec. 31, 2018
USD ($)
Operating Leases Future Minimum Payments Due Abstract  
Operating leases - 2019 $ 33,347 [1]
Operating leases - 2020 29,517 [1]
Operating leases - 2021 26,892 [1]
Operating leases - 2022 23,280 [1]
Operating leases - 2023 21,147 [1]
Operating leases - later years 77,899 [1]
Operating leases - Total 212,082 [1]
Capital leases - 2019 1,690 [2]
Capital leases - 2020 1,881 [2]
Capital leases - 2021 2,086 [2]
Capital leases - 2022 2,307 [2]
Capital leases - 2023 2,544 [2]
Capital leases - later years 9,904 [2]
Capital leases - Total $ 20,412 [2]
[1]

Minimum payments of operating leases have not been reduced by minimum non-cancelable sublease rentals due in the future of $ 0.1 million at December 31, 2018 .

[2]

Imputed interest necessary to reduce the minimum lease payment s to present value amounted to $ 6.3 million