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Commitments and Contingencies (Tables)
12 Months Ended
Jul. 31, 2017
Commitments and Contingencies [Abstract]  
Summary of future contractual obligations and other commercial commitments
Year ended July 31, 
(in thousands)
 2018   2019   Thereafter  Total 
Real estate leases $202  $102  $  $304 
Software as a Service (“SaaS”) license  223   100      323 
Total contractual obligations $425  $202  $  $627