Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Stock Option Activity (Details)

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Stock-Based Compensation - Summary of Stock Option Activity (Details)
3 Months Ended
Oct. 31, 2019
$ / shares
shares
Options Outstanding, Ending Balance 893,384
2011 Plan [Member]  
Options Outstanding, Beginning Balance 921,572
Options, Granted 4,900
Options, Forfeited/Cancelled (33,088)
Options Outstanding, Ending Balance 893,384
Options Exercisable, Ending Balance 684,173
Weighted Average Exercise Price, Outstanding Beginning Balance | $ / shares $ 12.63
Weighted Average Exercise Price, Granted | $ / shares 1.97
Weighted Average Exercise Price, Forfeited/Cancelled | $ / shares 15.46
Weighted Average Exercise Price, Outstanding Ending Balance | $ / shares 12.47
Weighted Average Exercise Price, Exercisable Ending Balance | $ / shares $ 13.61