Note 2 - Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)	12 Months Ended
Jan. 31, 2025	Jan. 31, 2024
Total revenues	$ 17,901,000	$ 22,596,000
Transferred over Time [Member]
Total revenues	17,617,000	22,358,000
Transferred at Point in Time [Member]
Total revenues	$ 284,000	$ 238,000

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details