Debt (Narrative) (Details)	1 Months Ended	9 Months Ended
	Aug. 31, 2017 USD ($)	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Aug. 31, 2022 USD ($)	Apr. 15, 2022 USD ($)	Jan. 31, 2022 USD ($)	Dec. 07, 2021	Oct. 31, 2021 USD ($)	Sep. 28, 2021
Line of Credit Facility [Line Items]
Maximum dividend amount in fiscal year		$ 3,000,000.0
Line of credit facility, term		$ 15,000,000.0
Line of credit facility, period for reduced borrowings during fourth quarter of each fiscal year (consecutive days)		30 days
Unused portion fee rate		0.375%
Long-term debt		$ 16,901,000				$ 14,513,000		$ 13,051,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Long-term debt		12,221,000				$ 9,551,000		$ 7,866,000
Original Mortgage Note
Line of Credit Facility [Line Items]
Interest rate	4.00%
Long-term debt		$ 4,700,000
Face amount	$ 5,800,000
Term	20 years
Inventory [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation		60.00%
Inventories [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation		85.00%
Maximum [Member] | Accounts receivable [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation		85.00%
Amendment No. 21 To Credit Facility [Member] | Consecutive Four Fiscal Quarters Ending July 31, 2020
Line of Credit Facility [Line Items]
Minimum fixed charge coverage ratio									1.2
Amended And Restated Revolving Credit And Security Agreement, Number 2
Line of Credit Facility [Line Items]
Extension fee					$ 250,000
Waiver and amendment fee					75,000
Extension fee and waiver and amendment fee due at closing					200,000
Extension fee and waiver and amendment fee due at first anniversary of closing					125,000
Amended And Restated Revolving Credit And Security Agreement, Number 2 | Consecutive Four Fiscal Quarters Ending July 31, 2020
Line of Credit Facility [Line Items]
Minimum fixed charge coverage ratio							1.00
Revolving Credit Facility [Member] | Amended And Restated Revolving Credit And Security Agreement, Number 2
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 45,000,000	$ 40,000,000	$ 70,000,000	$ 65,000,000.0
PNC [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Remaining borrowing capacity		14,500,000
PNC [Member] | Revolving Credit Facility [Member] | Amendment No. 19 to Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		65,000,000.0
PNC [Member] | Equipment Loan [Member] | Amendment No. 19 to Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 10,000,000.0
Alternate Base Rate Loans [Member]
Line of Credit Facility [Line Items]
Interest rate		7.50%