10. Income Taxes: Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($)		12 Months Ended
		May 31, 2024	May 31, 2023
Current tax provision
Federal		$ 2,365,000	$ 1,710,000
State		1,000	2,000
Current Federal, State and Local, Tax Expense (Benefit)		2,366,000	1,712,000
Deferred tax provision (benefit)
Federal		(444,000)	(494,000)
State		0	0
Deferred Federal, State and Local, Tax Expense (Benefit)		(444,000)	(494,000)
Provision for income taxes (Note 10)	[1]	$ 1,922,000	$ 1,218,000

[1] Note 10Note 10