INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Apr. 30, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 10,507	$ 4,206
Net income (loss)	1,637	593
Provision (benefit) for income taxes	389	146
Interest income, net	1	6
Depreciation	104	129
EBITDA	2,131	874
Capital expenditures	1	0
Total assets	101,103	99,991	$ 97,366
Land Development
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	8,461	3,856
Net income (loss)	1,807	706
Provision (benefit) for income taxes	318	14
Interest income, net	0	2
Depreciation	0	5
EBITDA	2,125	727
Capital expenditures	0	0
Total assets	86,590	76,232
Homebuilding
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,950	0
Net income (loss)	178	(86)
Provision (benefit) for income taxes	44	(27)
Interest income, net	0	0
Depreciation	0	0
EBITDA	222	(113)
Capital expenditures	1	0
Total assets	2,566	0
Corporate operations
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	96	350
Net income (loss)	(348)	(27)
Provision (benefit) for income taxes	27	159
Interest income, net	1	4
Depreciation	104	124
EBITDA	(216)	260
Capital expenditures	0	0
Total assets	$ 11,947	$ 23,759