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Schedule of Cash and Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Oct. 31, 2022
Apr. 30, 2022
Accounting Policies [Abstract]    
Cash and cash equivalents $ 10,030 $ 7,885
Restricted cash- short term 258 258
Restricted cash- long term 219 219
Cash, cash equivalents, restricted cash and restricted cash equivalents $ 10,507 $ 8,362