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Accounting Policies (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 31, 2020	Jan. 31, 2020
Accounting Policies (Details) [Line Items]
Income Taxes Paid	$ 300
Proceeds from Income Tax Refunds	300
Unrecognized Tax Benefits	7,298	$ 7,353
Income Tax Examination, Penalties and Interest Accrued	19	17
Inventory Write-down	300	$ 1,300
Provision for Income Taxes [Member]
Accounting Policies (Details) [Line Items]
Unrecognized Tax Benefits	$ (7,400)
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%
Building and Building Improvements [Member] | Minimum [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5
Building and Building Improvements [Member] | Maximum [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	40 years
Fixtures And Equipment [Member] | Minimum [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	2
Fixtures And Equipment [Member] | Maximum [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	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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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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Amount of unrecognized tax benefits.

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