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Note 3 - Fair Value Measurements (Tables) | 3 Months Ended
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Jun. 30, 2025
Notes Tables |
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] |
|  | June 30, 2025 |  |  | March 31, 2025 |
|  | Carrying Value |  |  | Fair Value (Level 2) |  |  | Carrying Value |  |  | Fair Value (Level 2) |
Notes |  | $ | 97,432 |  |  | $ | 96,708 |  |  | $ | 97,297 |  |  | $ | 95,063 |

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