Note 3 - Accounts Receivable (Details Textual) $ in Thousands	3 Months Ended
	Apr. 30, 2026 USD ($)	Apr. 30, 2025
One Customer [Member]
Accounts Receivable, Allowance for Credit Loss	$ 0
Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Number of Major Customers	0	0
Customer Concentration Risk [Member] \| Revenue Benchmark [Member]
Number of Major Customers	1	0
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| One Customer [Member]
Concentration Risk, Percentage	14.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.