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Note 3 - Revenue Recognition 1 (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Revenue, Performance Obligation Satisfied, Revenue Recognized, Percentage | 87.00% | 79.00% | 80.00% | 76.00%
Contract With Customer Loss Accrual | $ 1,600 |  | $ 3,200 |
Minimum [Member] |  |  |  |
Warranty Period (Year) |  |  | 1 year |
Contract with Customer, Payment Term (Day) |  |  | 30 days |
Maximum [Member] |  |  |  |
Warranty Period (Year) |  |  | 3 years |
Extended Service Warranty, Term (Year) |  |  | 4 years |
Contract with Customer, Payment Term (Day) |  |  | 60 days |
Grant [Member] |  |  |  |
Revenues, Total |  | $ 100 | $ 0 | $ 900

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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