INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022	Apr. 30, 2023
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS
Revenues	$ 8,854	$ 16,149	$ 19,143	$ 26,856
Net income (loss)	1,108	3,621	2,454	5,533
Capital expenditures	95	6	135	121
Total assets	117,761	96,184	117,761	96,184	$ 115,895
Land development
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS
Revenues	5,899	13,737	13,384	19,904
Net income (loss)	771	3,003	2,503	4,265
Capital expenditures	93	6	128	121
Total assets	94,039	89,624	94,039	89,624
Homebuilding
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS
Revenues	2,955	2,412	5,759	6,952
Net income (loss)	789	818	1,561	1,821
Capital expenditures	2	0	7	0
Total assets	8,721	7,074	8,721	7,074
Corporate operations
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS
Revenues	0	0	0	0
Net income (loss)	(452)	(200)	(1,610)	(553)
Capital expenditures	0	0	0	0
Total assets	$ 15,001	$ (514)	$ 15,001	$ (514)