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LEASES - Future minimum lease payments (Details)
Apr. 30, 2020
USD ($)
Operating lease payments  
2021 $ 436,000
2022 448,000
2023 452,000
2024 452,000
2025 456,000
2026 467,000
2027 350,000
Total 3,061,000
Finance lease payments  
2021 27,000
Total $ 27,000