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Cash and Cash Equivalents
12 Months Ended
Jul. 31, 2016
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents
5.
Cash and Cash Equivalents

The Company considers all highly liquid instruments purchased with a maturity of three months or less to be cash equivalents.  The Company invests cash in excess of operating requirements in income-producing short-term investments.  Money market funds of $0.3 million and less than $0.1 million were included in cash and cash equivalents in the accompanying consolidated balance sheets and consolidated statements of cash flows at July 31, 2016 and 2015, respectively.