ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Apr. 30, 2021
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Total	$ 3,700	$ 4,458
Real estate operations
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Accrued expenses	536	658
Trade payables	1,100	1,377
Real estate customer deposits	1,595	1,769
Total	3,231	3,804
Corporate operations
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Total	$ 469	$ 654