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Tax Credit Investments (Additional Information) (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Summary of Investment Holdings [Line Items]    
Amortization of tax credit investment $ 4,293 $ 4,380
Income tax expense 29,526 19,105
Tax Credit Investment [Member]    
Summary of Investment Holdings [Line Items]    
Interest expense 1,052 1,286
Amortization of tax credit investment 4,293 4,380
Income tax expense $ 5,967 $ 6,128