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Accounting Policies (Details) - USD ($)	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Jan. 31, 2024
Accounting Policies (Details) [Line Items]
Income Taxes Paid	$ 100,000	$ 4,500,000
Unrecognized Tax Benefits	18,900,000		$ 18,900,000
Income Tax Examination, Penalties and Interest Accrued	77,100		$ 70,000
Inventory Write-down	800,000
Provision For Income Taxes [Member]
Accounting Policies (Details) [Line Items]
Unrecognized Tax Benefits	$ 18,800,000
Cost of Sales [Member]
Accounting Policies (Details) [Line Items]
Maximum Percentage Of Equity Ownership Interest Which May Be Considered For Equity Method Of Accounting	20.00%
Minimum [Member] | Building and Building Improvements [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Minimum [Member] | Fixtures And Equipment [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member] | Building and Building Improvements [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Maximum [Member] | Fixtures And Equipment [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	20 years

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The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

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