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Other Assets - Amortization (Details)
$ in Millions
Apr. 30, 2021
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Amortization expense for remainder of fiscal 2021 $ 0.8
Amortization expense for 2022 1.6
Amortization expense for 2023 1.5
Amortization expense for 2024 1.5
Amortization expense thereafter $ 3.9