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Other assets and Intangibles - Amortization (Details)
$ in Millions
Jul. 31, 2022
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Amortization expense for remainder of fiscal 2022 $ 0.4
Amortization expense for 2023 1.5
Amortization expense for 2024 1.5
Amortization expense for 2025 1.5
Amortization expense thereafter $ 2.4