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Leases (Details) - Schedule of Lease Term and Discount Rate
Apr. 30, 2020
Weighted-average remaining lease term (years):  
Weighted-average remaining lease term:Operating leases 6 years 146 days
Weighted-average remaining lease term:Finance leases 2 years 255 days
Weighted-average discount rate:  
Weighted-average discount rate:Operating leases 4.90%
Weighted-average discount rate:Finance leases 8.10%