Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Operating activities:
Net loss	$ (45,660)	$ (8,646)	$ (2,076)
Adjustments to reconcile net loss to net cash used in operating activities:
Common stock issued or to be issued for compensation	6,205	2,737	3,347
Stock-based compensation	355	32
Amortization of debt discounts	2,286
Allowance for doubtful accounts	19
Issuance of treasury shares for 401K match		52
Gain from sale of patent			(35)
Deferred income taxes			2,809
Changes in assets and liabilities:
Trade accounts receivable	(30)	42	(21)
Inventory	(945)
Assets held for sale - Intellectual Property Business	(3)
Prepaid expenses and other current assets	866	(1,354)	(181)
Prepaid expenses - related to settlements and licensing		783	4,977
Other assets	(57)	11	20
Trade accounts payable	2,526	446	238
Accrued expenses	2,460	214	(538)
Liabilities held for sale - Intellectual Property Business	357
FCC consent decree payable	3,500
Due to IDT Corporation			(6)
Deferred revenue	127	(1,586)	(10,179)
Income taxes payable	(225)		(245)
Settlement of litigation	7,200
Net cash used in operating activities	(21,019)	(7,269)	(1,890)
Investing activities:
Prepaid expenses - related to sale of IP business to IDT	(1,029)
Purchase of intangibles			(15)
Proceeds from sale of patent			35
Net cash provided by (used in) investing activities	(1,029)		20
Financing activities:
Proceeds from loans payable	17,500
Costs related to loans payable	(80)
Common stock issued upon exercise of stock options	1,802	10	68
Sale of treasury stock			65
Dividends paid to stockholders of noncontrolling interests			(875)
Net cash provided by (used in) financing activities	19,222	10	(742)
Net decrease in cash and cash equivalents	(2,826)	(7,259)	(2,612)
Cash and cash equivalents at beginning of year	11,361	18,620	21,232
Cash and cash equivalents at end of year	8,535	11,361	18,620
Supplemental schedule of noncash activities
Reclassification of prepaid marketing to inventory	643
Issuance of warrants with loans payable	3,307
Exercises of warrants reducing loans payable	5,125
Common stock repurchased for withholding tax purposes			545
Reversal of prior period related party payables			513
Supplemental cash flow information
Cash paid during the year for interest	305
Cash paid during the year for income taxes	$ 13	$ 15	$ 119