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Financial Assets and Liabilities - Investments Maturity Table (Details)
$ in Thousands
Jul. 31, 2015
USD ($)
Amortized Cost  
Due in 1 year or less $ 78,364
Due in 1-5 years 58,037
Due in 6-10 years 106
Total 136,507
Fair Value  
Due in 1 year or less 78,364
Due in 2-5 years 58,026
Due in 6-10 years 106
Total $ 136,496