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OTHER ASSETS (Details) - USD ($)
$ in Thousands
Jan. 31, 2022
Apr. 30, 2021
Prepaid expenses $ 412 $ 324
Receivables 39 37
Right-of-use assets associated with leases of office facilities 123 84
Other assets 80 172
Property and equipment, net 1,270 28
Other Assets 1,924 645
Equipment [Member]    
Property and equipment 235 222
Less accumulated depreciation (209) $ (194)
Property [Member]    
Property and equipment $ 1,244