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Commitments and Contingencies (Details)
$ in Thousands
Jul. 31, 2016
USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
2017 $ 23,217
2018 20,154
2019 16,179
2020 12,777
2021 9,847
Thereafter 61,904
Subtotal 144,078
Less Amount Representing Interest 0
Total 144,078
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
2017 1,124
2018 1,093
2019 909
2020 0
2021 0
Thereafter 0
Subtotal 3,126
Less Amount Representing Interest (194)
Total $ 2,932