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Note 12 - Fair Value Measurements (Details Textual) $ in Millions | Sep. 30, 2022 USD ($) | Mar. 31, 2022 USD ($)
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Interest Rate Swap [Member] |  |
Derivative, Number of Instruments Held, Total | 2 |
Interest Rate Swap, One [Member] |  |
Derivative, Notional Amount |  | $ 52.7
Interest Rate Swap, Two [Member] |  |
Derivative, Notional Amount | $ 22.1 |

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