Note 4 - Revenue From Contracts With Customers (Details Textual) - USD ($)	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Accounts Receivable, after Allowance for Credit Loss, Current	$ 11,817,000	$ 6,566,000	$ 3,200,000
Accounts Receivable, Allowance for Credit Loss, Current	332,000	332,000	$ 332,000
Increase (Decrease) in Contract with Customer, Liability	$ (1,856,000)	$ 3,078,000
Minimum [Member]
Contract with Customers, Turn Over Period (Month)	3 months
Maximum [Member]
Contract with Customers, Turn Over Period (Month)	6 years