Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Aug. 31, 2023	Aug. 31, 2022
Cash flows from operating activities:
Consolidated net income	$ 571,664	$ 507,743
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	59,746	62,260
Unrealized (gain) loss on marketable securities, net	(2,960)	10,000
Deferred income taxes	22,000	185,000
Non-cash lease recovery	(1,542)	(20,647)
Non-cash stock-based compensation expense	25,527	69,216
Changes in operating assets and liabilities:
Accounts receivable	78,820	745,986
Other receivables	15,966	(22,040)
Prepaid expenses	(29,714)	7,515
Prepaid and recoverable income taxes		26,725
Accounts payable, other payables, accrued expenses and other current liabilities	(341,784)	300,464
Advances from customers	(12,012)	48,137
Income taxes payable	181,000
Legal settlement payable		(597,566)
Net cash provided by operating activities	566,711	1,322,793
Cash flows from investing activities:
Purchases of certificates of deposit	(500,000)
Maturities of certificates of deposit	245,000
Purchases of equipment and leasehold improvements		(1,783)
Net cash used in investing activities	(255,000)	(1,783)
Cash flows from financing activities:
Net repayments on credit facility		(61,882)
Net cash used in financing activities		(61,882)
Net increase in cash and cash equivalents	311,711	1,259,128
Cash and cash equivalents at beginning of period	7,382,320	6,490,158
Cash and cash equivalents at end of period	7,694,031	7,749,286
Supplemental disclosures of cash flow data:
Income taxes paid		6,000
Interest paid	$ 26,000	$ 17,000