Note 6 - Long-Term Debt - Schedule of Loan-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025
Total Outstanding Debt	$ 3,463	$ 828
Less Current Portion	115	69
Long-term debt	3,348	759
RUS Loan Agreement [Member]
Total Outstanding Debt	3,037	615
Bank Equipment Loans [Member]
Total Outstanding Debt	$ 426	$ 213

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details