Share-Based Compensation (Tables)

9 Months Ended

Apr. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

A summary of our stock option activity is as follows:

	Shares			Weighted- Average Exercise Price		Aggregate Intrinsic Value
Outstanding at July 31, 2018		7,626,093		$	1.09	$	—
Granted		300,000		$	0.52		—
Exercised		—		$	—		—
Cancelled		(253,125	)	$	1.28		—
Outstanding at April 30, 2019		7,672,968		$	1.07	$	3,000

Schedule of Fair Value Assumptions

The fair value of stock options was estimated at the grant date using the following weighted average assumptions:

	Three Months Ended April 30, 2019			Three Months Ended April 30, 2018			Nine Months Ended April 30, 2019			Nine Months Ended April 30, 2018
Volatility		82.24	%		66.33	%		75.67	%		70.16	%
Risk-free interest rate		2.55	%		2.34	%		2.63	%		2.26	%
Dividend yield		—	%		0.0	%		0.0	%		0.0	%
Expected life		5.68 years			2.93 years			4.80 years			3.41 years