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REVENUE RECOGNITION - Summary of Changes in Deferred Revenue (Detail)
$ in Thousands
9 Months Ended
Apr. 30, 2019
USD ($)
Change in Deferred Revenue  
Balance at beginning of period $ 3,858
Deferral of revenue 3,583
Recognition of deferred amounts upon satisfaction of performance obligation (4,415)
Balance at end of period $ 3,026