Stockholders' Equity (Schedule of Non-Vested Options) (Details) (Stock Option [Member], USD $)	9 Months Ended
	Apr. 30, 2015
Stock Option [Member]
Number of Options
Non-vested	17,500
Granted	185,000
Vested	(160,833)
Non-vested	41,667
Weighted Average Grant Date Fair Value
Non-vested	$ 3.11
Granted	$ 5.06
Vested	$ 5.17
Non-vested	$ 3.85