Note 10 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		21843 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2022
Income Tax Expense (Benefit)	$ 418,000	$ 211,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	178,000	(2,594,000)	$ (2,594,000)
Deferred Tax Liabilities, Undistributed Foreign Earnings	0
Unrecognized Tax Benefits	$ 0	$ 0	$ 0