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Future Minimum Lease Commitments Under Non-Cancelable Lease Agreement (Detail)
$ in Thousands
May 31, 2016
USD ($)
Leases [Abstract]  
2017 $ 50,828
2018 39,191
2019 26,204
2020 17,240
2021 14,359
Thereafter 51,783
Total Minimum Lease Commitments $ 199,605