INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022	Apr. 30, 2022
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS
Revenues	$ 9,117	$ 9,391	$ 35,975	$ 35,404
Net income	16,574	910	22,107	5,873
Capital expenditures	3	4	124	16
Total assets	113,140	105,140	113,140	105,140	$ 94,917
Land development
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS
Revenues	6,829	6,593	26,735	23,097
Net income	5,131	770	9,396	4,187
Capital expenditures	0	0	117	1
Total assets	91,883	87,205	91,883	87,205
Homebuilding
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS
Revenues	2,288	2,798	9,240	5,409
Net income	351	366	2,171	556
Capital expenditures	3	4	7	15
Total assets	8,542	5,491	8,542	5,491
Corporate
INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS
Revenues	0	0	0	6,898
Net income	11,092	(226)	10,540	1,130
Capital expenditures	0	0	0	0
Total assets	$ 12,715	$ 12,444	$ 12,715	$ 12,444