CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Issuance of common stock, expenses	$ 207	$ 357
Common Stock [Member]
Issuance of common stock, expenses	207	357
Additional Paid-in Capital [Member]
Issuance of common stock, expenses	$ 207	$ 357