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INCOME TAXES - Reconciliation of taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2024
Apr. 30, 2023
INCOME TAXES    
Computed tax provision at statutory rate $ 1,811 $ 1,614
Increase (reduction) in tax resulting from:    
Deferred tax rate changes (63) 105
Change in valuation allowances 138 (3,297)
State income taxes, net of federal income tax effect 472 (2,222)
Permanent items 0 (13,057)
Other (623) 2,708
Total provision (benefit) for income taxes $ 1,735 $ (14,149)