Liquidity (Details) - USD ($)	3 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Jul. 31, 2013
Liquidity [Abstract]
Accumulated deficit	$ (91,668,000)	$ (88,848,000)
Cash and cash equivalents	6,055,000	1,321,000	$ 5,331,000	$ 1,321,000	$ 86,000
Accounts Payable, Current	384,000	$ 560,000
Long term debt	0
Proceeds received from private placement	$ 2,000,000