Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Inventory Valuation Reserves	$ 2,000	$ 1,500
Asset Impairment Charges	0	0
Goodwill, Impairment Loss	0	0
Revenue from Contract with Customer, Including Assessed Tax	$ 145,639	$ 105,984
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	809,949	1,421,771
Gain (Loss), Foreign Currency Transaction, before Tax	$ (700)	$ (100)
Shares Tied to Derivative Liability [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	300,000	1,000,000
Held Transactions [Member]
Revenue from Contract with Customer, Including Assessed Tax		$ 600
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Capital Power [Member]
Concentration Risk, Percentage	14.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Inox Wind Limited [Member]
Concentration Risk, Percentage	12.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Anovion LLC [Member]
Concentration Risk, Percentage		21.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Fuji Bridex Pte Ltd [Member]
Concentration Risk, Percentage		15.00%

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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