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BENEFIT PLANS - Additional information (Details) - USD ($)
1 Months Ended 3 Months Ended
Nov. 30, 2021
Jul. 31, 2023
Jul. 31, 2022
BENEFIT PLANS      
Decrease in pension liability, net of tax   $ 0 $ 66,000
Stock-based compensation   48,000 36,000
Board of Directors Chairman      
BENEFIT PLANS      
Director compensation non-cash expense   23,000 23,000
Accrued compensation expense related to the deferred stock units   53,000 53,000
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 13,000
Restricted stock | Equity plan      
BENEFIT PLANS      
Stock-based compensation   36,000 $ 22,000
Unrecognized compensation expense related to restricted shares   $ 384,000  
Weighted-average remaining vesting period   3 years