Stockholders' Equity (Details 2)	3 Months Ended
	Oct. 31, 2016 $ / shares shares
Number of Options
Non-vested, Beginning Balance | shares	90,833
Granted | shares	50,000
Vested | shares	(4,167)
Non-vested, Ending Balance | shares	136,666
Weighted Average Grant Date Fair Value
Non-vested, Beginning Balance | $ / shares	$ 7.27
Granted | $ / shares	8.5
Vested | $ / shares	5.64
Non-vested, Ending Balance | $ / shares	$ 7.83