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INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Oct. 31, 2022
Oct. 31, 2021
Apr. 30, 2022
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS          
Revenues $ 16,149 $ 16,112 $ 26,856 $ 26,098  
Net income (loss) 3,621 3,326 5,533 4,963  
Capital expenditures 6 10 121 11  
Total assets 96,184 104,909 96,184 104,909 $ 94,917
Land development          
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS          
Revenues 13,737 8,621 19,904 16,561  
Net income (loss) 3,003 1,612 4,265 3,418  
Capital expenditures 6 0 121 0  
Total assets 89,624 88,231 89,624 88,231  
Homebuilding          
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS          
Revenues 2,412 689 6,952 2,639  
Net income (loss) 818 12 1,821 190  
Capital expenditures 0 10 0 11  
Total assets 7,074 3,357 7,074 3,357  
Corporate          
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS          
Revenues 0 6,802 0 6,898  
Net income (loss) (200) 1,702 (553) 1,355  
Capital expenditures 0 0 0 0  
Total assets $ (514) $ 13,321 $ (514) $ 13,321