ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Apr. 30, 2021	Apr. 30, 2020
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Total	$ 4,458	$ 3,125
Real estate operations
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Accrued expenses	658	518
Trade payables	1,377	1,146
Real estate customer deposits	1,769	1,117
Total	3,804	2,781
Corporate operations
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Total	$ 654	$ 344