Debt (Narrative) (Details)	1 Months Ended		8 Months Ended	9 Months Ended
	Oct. 31, 2024 USD ($)	Aug. 31, 2017 USD ($)	Sep. 30, 2024 USD ($)	Oct. 31, 2024 USD ($)	Oct. 01, 2024 USD ($)	Aug. 31, 2024 USD ($)	Apr. 29, 2024 USD ($)	Apr. 28, 2024 USD ($)	Jan. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)
Line of Credit Facility [Line Items]
Long-term debt	$ 4,199,000			$ 4,199,000					$ 4,384,000	$ 8,191,000
Original Mortgage Note
Line of Credit Facility [Line Items]
Face amount		$ 5,800,000
Interest rate	4.00%			4.00%
Term		20 years
Long-term debt	$ 4,200,000			$ 4,200,000
Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Increase in inventory sublimit under credit agreement						$ 35,000,000
Line of credit facility, period for reduced borrowings during fourth quarter of each fiscal year (consecutive days)				30 days
Amended and Restated Credit Agreement | In Effect May Through August 2024
Line of Credit Facility [Line Items]
Increase in assemble to ship inventory sublimit under credit agreement						15,000,000
Amended and Restated Credit Agreement | January through July
Line of Credit Facility [Line Items]
Line of credit facility, borrowing base limitation on inventory in excess of liquidation value of eligible inventory	$ 15,000,000.0			$ 15,000,000.0
Amended and Restated Credit Agreement | Consecutive Four Fiscal Quarters Ending July 31, 2020
Line of Credit Facility [Line Items]
Minimum fixed charge coverage ratio	1.20			1.20
Amended and Restated Credit Agreement | Inventory
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation				60.00%
Amended and Restated Credit Agreement | Inventories
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation				85.00%
Amended and Restated Credit Agreement | Maximum | Accounts receivable
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation				85.00%
Equipment Loan | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Line of credit facility, equipment financing	$ 2,000,000			$ 2,000,000
PNC | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Maximum dividend amount in fiscal year	5,000,000.0		$ 5,000,000	5,000,000.0	$ 8,000,000		$ 5,000,000.0	$ 3,000,000.0
Line of credit facility, permitted acquisitions amount			$ 5,000,000		$ 8,000,000
PNC | Revolving credit line
Line of Credit Facility [Line Items]
Remaining borrowing capacity	$ 18,700,000			$ 18,700,000
Unused portion fee rate	0.25%		0.375%
Line of credit facility, facility fee rate			0.25%		0.375%
PNC | Revolving credit line | Secured Overnight Financing Rate (SOFR) | January through July
Line of Credit Facility [Line Items]
Basis spread on variable rate				3.00%
PNC | Revolving credit line | Secured Overnight Financing Rate (SOFR) | August through December
Line of Credit Facility [Line Items]
Basis spread on variable rate				2.50%
PNC | Revolving credit line | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 60,000,000.0			$ 60,000,000.0			$ 70,000,000	$ 72,500,000
PNC | Revolving credit line | Amended and Restated Credit Agreement | June through August
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity						$ 70,000,000.0
PNC | Equipment Loan | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 10,000,000.0			$ 10,000,000.0