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Accounting Policies (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jul. 31, 2024 | Jul. 31, 2023 | Jan. 31, 2024 | Jan. 31, 2023
Accounting Policies (Details) [Line Items] |  |  |  |
Income Taxes Paid | $ 2,300,000 | $ 6,400,000 |  |
Unrecognized Tax Benefits | 18,979,000 | $ 19,091,000 | $ 18,965,000 | $ 19,088,000
Income Tax Examination, Penalties and Interest Accrued | 84,300 |  | 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% |  |  |
Approximation [Member] |  |  |  |
Accounting Policies (Details) [Line Items] |  |  |  |
Unrecognized Tax Benefits | $ 18,900,000 |  | $ 18,900,000 |
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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