UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Operating activities:
Net income	$ 72	$ 381
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	437	498
Issuance of common stock for services	0	8
Depreciation and amortization expense	579	433
Gain on disposal of equipment	(52)	0
Operating lease right-of use assets	299
Provision for doubtful accounts	218	53
Deferred rent	0	279
Changes in operating assets and liabilities:
Accounts receivable	(334)	(55)
Prepaid expenses and other current assets	(47)	(11)
Other long term assets	0	(21)
Accounts payable	(913)	(46)
Accrued liabilities	(202)	72
Operating lease liabilities	(261)
Deferred revenue	564	19
Net cash provided by operating activities	360	1,610
Investing activities:
Purchase of property and equipment	(693)	(693)
Net cash used in investing activities	(693)	(693)
Financing activities:
Proceeds from exercise of options and warrants	429	1,440
Finance lease payments	(51)	(53)
Net cash provided by financing activities	378	1,387
Increase in cash	45	2,304
Cash at beginning of period	3,237	1,006
Cash at end of period	3,282	3,310
Non-cash investing activities:
Purchase equipment under finance lease	212	235
Credit received on purchase of equipment	160	0
Unpaid portion of property and equipment purchase	$ 321	$ 0