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Other Assets - Amortization (Details)
$ in Millions
Apr. 30, 2020
USD ($)
Amortization expense for remainder of fiscal 2020 $ 0.8
Amortization expense for 2021 1.6
Amortization expense for 2022 1.6
Amortization expense for 2023 1.5
Maximum [Member]  
Amortization expense thereafter through fiscal year 2023 $ 5.4