UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Operating activities:
Net loss	$ (674,157)	$ (2,546,449)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	564,000	1,129,000
Depreciation expense	42,000	45,000
Provision for bad debts	14,000	(2,000)
Issuance of common stock for services	0	15,000
Changes in operating assets and liabilities:
Accounts receivable	(407,000)	(314,000)
Prepaid expenses and other current assets	(60,000)	94,000
Accounts payable	(120,000)	(387,000)
Accrued liabilities	(134,000)	(51,000)
Other non-current liability	0	20,000
Deferred revenue	(1,173,000)	(442,000)
Net cash used in operating activities	(1,948,000)	(2,439,000)
Investing activities:
Purchase of property and equipment	(910,000)	(17,000)
Net cash used in investing activities	(910,000)	(17,000)
Financing activities:
Proceeds from June 2016 Public Offering, net of financing costs of $742	0	4,340,000
Capital lease payments	(7,000)	(6,000)
Net cash (used in)/provided by financing activities	(7,000)	4,334,000
(Decrease)/Increase in cash and cash equivalents.	(2,865,000)	1,878,000
Cash and cash equivalents, beginning of period	3,295,000	2,585,000
Cash and cash equivalents, end of period	$ 430,000	$ 4,463,000