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INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2024
Jan. 31, 2023
Apr. 30, 2023
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS          
Revenues $ 12,689 $ 9,117 $ 31,833 $ 35,975  
Net income (loss) 92 16,574 2,546 22,107  
Capital expenditures 127 3 311 124  
Total assets 118,994 113,140 118,994 113,140 $ 115,895
Land development          
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS          
Revenues 10,553 6,829 23,426 26,735  
Net income (loss) 162 5,131 2,726 9,396  
Capital expenditures 60 0 237 117  
Total assets 94,161 91,883 94,161 91,883  
Homebuilding          
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS          
Revenues 2,136 2,288 8,407 9,240  
Net income (loss) 341 351 1,840 2,171  
Capital expenditures 67 3 74 7  
Total assets 11,550 8,542 11,550 8,542  
Corporate operations          
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS          
Revenues 0 0 0 0  
Net income (loss) (411) 11,092 (2,020) 10,540  
Capital expenditures 0 0 0 0  
Total assets $ 13,283 $ 12,715 $ 13,283 $ 12,715