Stockholders' Equity (Details 2) - $ / shares	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Number of Options
Non-vested, Beginning Balance	90,833	37,500
Granted	320,000	1,507,500
Vested	(70,962)	(1,454,167)
Non-vested, Ending Balance	339,871	90,833
Weighted Average Grant Date Fair Value
Non-vested, Beginning Balance	$ 7.27	$ 3.85
Granted	7.70	7.06
Vested	6.70	7.00
Non-vested, Ending Balance	$ 7.93	$ 7.27