Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Operating activities:
Net loss	$ (4,255)	$ (687)
Adjustments to reconcile net loss to net cash used in operating activities:
Common stock issued for compensation	2,417	598
Stock-based compensation	97
Changes in assets and liabilities:
Trade accounts receivable, net	(7)	(2)
Prepaid expenses - related to settlements and licensing		783
Prepaid expenses and other current assets	(7)	(81)
Prepaid expenses - development agreement		(1,000)
Other assets	(1)	5
Trade accounts payable	383	(94)
Accrued expenses	(520)	(232)
Deferred revenue	95	(1,603)
Income taxes payable	(2)
Net cash used in operating activities	(1,800)	(2,313)
Net decrease in cash and cash equivalents	(1,800)	(2,313)
Cash and cash equivalents at beginning of period	11,361	18,620
Cash and cash equivalents at end of period	9,561	16,307
Supplemental cash flow information
Cash paid during the period for income taxes	$ 7	$ 3