Accounting Policies (Details) - USD ($)	3 Months Ended		12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Jan. 31, 2021
Accounting Policies (Details) [Line Items]
Outbound Freight Charges	$ 5,596,000	$ 1,323,000
Income Taxes Paid		300,000
Proceeds from Income Tax Refunds		$ 200,000
Unrecognized Tax Benefits	8,518,000		$ 8,380,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 25,000		20,000
Inventory Write-down			$ 1,000,000.0
Minimum [Member] | Building and Building Improvements [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5
Minimum [Member] | Fixtures And Equipment [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	2
Maximum [Member] | Building and Building Improvements [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	40 years
Maximum [Member] | Fixtures And Equipment [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	20 years
Provision for Income Taxes [Member]
Accounting Policies (Details) [Line Items]
Unrecognized Tax Benefits	$ (8,300,000)
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%