Consolidated Statement of Equity (Deficiency) (Unaudited) - 9 months ended Apr. 30, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-In Capital	Accumulated Deficit	Treasury Stock	Noncontrolling Interests
Balance at Jul. 31, 2016	$ 11,381	$ 8	$ 114	$ 21,589	$ (8,225)	$ (428)	$ (1,677)
Balance, shares at Jul. 31, 2016		787	11,431
Common stock issued for exercises of stock options	8			8
Common stock issued for exercises of stock options, shares			1
Issuance of warrants with loans payable	4,040			4,040
Issuance of warrants with loans payable, shares
Common stock issued for exercises of warrants	5,125		$ 1	5,124
Common stock issued for exercises of warrants, shares			148
Common stock issued for compensation	5,188		$ 4	5,184
Common stock issued for compensation, shares			369
Stock-based compensation	290			290
Net loss	(36,231)				(35,549)		(682)
Balance at Apr. 30, 2017	$ (10,199)	$ 8	$ 119	$ 36,235	$ (43,774)	$ (428)	$ (2,359)
Balance, shares at Apr. 30, 2017		787	11,949