Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Common Stock To Be Issued	Additional Paid-In Capital	(Accumulated Deficit) Retained Earnings	Treasury Stock	Noncontrolling Interests
Balance at Jul. 31, 2014	$ 16,699	$ 8	$ 110		$ 14,886	$ 2,037		$ (342)
Balance, shares at Jul. 31, 2014		787	11,013
Common stock issued or to be issued for compensation	3,347		$ 3	1,495	1,849
Common stock issued or to be issued for compensation, shares			265
Common stock issued for exercises of stock options	68				68
Common stock issued for exercises of stock options, shares			12
Common stock issued for deferred stock units
Common stock issued for deferred stock units, shares			20
Reversal of prior period related party payables	513				513
Common stock repurchased for withholding tax purposes	(545)						(545)
Sale of treasury stock / Issuance of treasury shares for 401K match	65						65
Forfeiture of unvested shares
Forfeiture of unvested shares, shares			(2)
Net loss	(2,076)					(1,965)		(111)
Dividends	(875)							(875)
Balance at Jul. 31, 2015	17,196	$ 8	$ 113	1,495	17,316	72	(480)	(1,328)
Balance, shares at Jul. 31, 2015		787	11,308
Common stock issued or to be issued for compensation	2,737		$ 1	(1,495)	4,231
Common stock issued or to be issued for compensation, shares			121
Common stock issued for exercises of stock options	10				10
Common stock issued for exercises of stock options, shares			2
Stock-based compensation	32				32
Sale of treasury stock / Issuance of treasury shares for 401K match	52						52
Net loss	(8,646)					(8,297)		(349)
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 compensation	6,205		$ 4		6,201
Common stock issued for compensation, shares			369
Common stock issued for exercises of stock options	1,802		$ 1		1,801
Common stock issued for exercises of stock options, shares			41
Stock-based compensation	355				355
Issuance of warrants with loans payable	3,307				3,307
Common stock issued for exercises of warrants	5,125		$ 1		5,124
Common stock issued for exercises of warrants, shares			148
Net loss	(45,660)					(44,647)		(1,013)
Balance at Jul. 31, 2017	$ (17,485)	$ 8	$ 120		$ 38,377	$ (52,872)	$ (428)	$ (2,690)
Balance, shares at Jul. 31, 2017		787	11,989