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v3.23.2

Note 3 - Equity Compensation Plans and Capital Stock (Details Textual) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Jun. 25, 2020 | Sep. 01, 2016
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares) |  |  | 1,062,067 |
Treasury Stock, Shares, Acquired (in shares) | 0 | 0 |  |
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings (in shares) | 4,162 | 52,235 |  |
Cumulative Preferred Stock [Member] |  |  |  |
Preferred Stock, Shares Authorized (in shares) | 1,000,000 |  |  |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ 1 |  |  |
Preferred Stock, Shares Issued (in shares) | 0 | 0 |  |
2016 Restricted Stock Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  |  |  | 500,000
2016 Restricted Stock Plan [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |
Share-Based Payment Arrangement, Expense | $ 0.3 | $ 0.4 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 0.3 | $ 0.5 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 4 months 24 days | 2 years 2 months 12 days |  |
2016 Restricted Stock Plan [Member] | Restricted Stock [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | 122,485 |  |  |

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