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BENEFIT PLANS - Additional information (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Nov. 30, 2021 | Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2022 | Oct. 31, 2021
BENEFIT PLANS |  |  |  |  |
Other comprehensive income |  | $ 77,000 | $ 67,000 | $ 143,000 | $ 133,000
Share-based compensation |  |  |  | 87,000 | 47,000
Board of Directors Chairman |  |  |  |  |
BENEFIT PLANS |  |  |  |  |
Non Cash Director Fee Compensation |  | 23,000 | 22,000 | 45,000 | 45,000
Accrued compensation expense related to the deferred stock units |  | 75,000 | 75,000 |  |
Equity Plan | President and Chief Executive Officer |  |  |  |  |
BENEFIT PLANS |  |  |  |  |
Stock option issued during the year | 50,000 |  |  |  |
Exercise price | $ 14.24 |  |  |  |
2016 Equity Plan | Board of Directors Chairman |  |  |  |  |
BENEFIT PLANS |  |  |  |  |
Non cash compensation expense |  | 12,000 |  | 25,000 |
Restricted Stock | Equity Plan |  |  |  |  |
BENEFIT PLANS |  |  |  |  |
Share-based compensation |  | 51,000 | 31,000 | 87,000 | 47,000
Unrecognized compensation expense related to restricted shares |  | $ 182,000 | $ 137,000 | $ 182,000 | $ 137,000
Weighted-average remaining vesting period |  |  |  | 3 years |

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