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Leases - Schedule of Remaining Lease Payments Under Operating Lease (Details)
Apr. 30, 2020
USD ($)
Leases [Abstract]  
2021 $ 331,000
2022 341,000
2023 352,000
2024 362,000
Thereafter 184,000
Total future minimum lease payments 1,570,000
Less imputed interest (263,000)
Total $ 1,307,000