UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Operating activities:
Net income (loss)	$ 75	$ (641)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock-based compensation	120	131
Depreciation and amortization expense	277	182
Gain on termination of operating lease	(75)	0
Operating lease right-of use assets	(67)	98
Provision for doubtful accounts	(6)	6
Changes in operating assets and liabilities:
Accounts receivable	(263)	480
Prepaid expenses and other current assets	25	52
Accounts payable	(465)	(82)
Accrued liabilities	(348)	(410)
Other non-current liabilities	1	0
Operating lease liabilities	157	(42)
Deferred revenue	(146)	(53)
Net cash used in operating activities	(715)	(279)
Investing activities:
Purchase of property and equipment	(718)	(749)
Proceeds From Refund Of Security Deposit	92	0
Net cash used in investing activities	(626)	(749)
Financing activities:
Finance lease payments	(58)	(7)
Net cash used in financing activities	(58)	(7)
Decrease in cash	(1,399)	(1,035)
Cash at beginning of period	8,342	3,237
Cash at end of period	6,943	2,202
Non-cash investing activities:
Right-of-use assets obtained in exchange for operating lease liabilities	$ 3,872	$ 3,205