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Financial Assets and Liabilities - Investments Maturity Table (Details)
$ in Thousands
Jul. 31, 2016
USD ($)
Amortized Cost  
Due in 1 year or less $ 98,041
Due in 2-5 years 45,390
Due in 6-10 years 47
Total 143,478
Fair Value  
Due in 1 year or less 98,065
Due in 2-5 years 45,430
Due in 6-10 years 47
Total $ 143,542