ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Apr. 30, 2020
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Total	$ 4,700	$ 3,125
Real estate operations
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Accrued expenses	884	518
Trade payables	1,087	1,146
Real estate customer deposits	1,795	1,117
Other	60
Total	3,826	2,781
Corporate
ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Total	$ 875	$ 344