Stockholders' Equity (Details 2)	9 Months Ended
	Apr. 30, 2017 $ / shares shares
Number of Options
Non-vested, Beginning Balance | shares	90,833
Granted | shares	320,000
Vested | shares	(59,717)
Non-vested, Ending Balance | shares	351,116
Weighted Average Grant Date Fair Value
Non-vested, Beginning Balance | $ / shares	$ 7.27
Granted | $ / shares	7.7
Vested | $ / shares	6.93
Non-vested, Ending Balance | $ / shares	$ 7.73