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Leases - Schedule of Right-of Use Assets and Lease Liabilities (Details) - USD ($)
Apr. 30, 2020
Apr. 30, 2019
Leases [Abstract]    
Operating right-of-use asset, net $ 1,165,000
Right-of-use liability- current 229,000
Right-of-use liability- long term 1,078,000
Total lease liability $ 1,307,000  
Weighted average remaining lease term- operating leases 4 years 5 months 27 days  
Weighted average discount rate- operating leases 8.50%