Note 13 - Segment Information (Details Textual)	12 Months Ended
Note 13 - Segment Information (Details Textual)	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Number of Reportable Segments	2
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Customer A [Member]
Concentration Risk, Percentage	17.00%	16.00%	14.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Customer B [Member]
Concentration Risk, Percentage	11.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Customer A [Member]
Concentration Risk, Percentage	25.00%	24.00%

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.