Debt (Narrative) (Details)	1 Months Ended	12 Months Ended
	Aug. 31, 2017 USD ($)	Jan. 31, 2023 USD ($)	Jan. 31, 2022 USD ($)	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Aug. 31, 2022 USD ($)	Jul. 31, 2022 USD ($)	Apr. 15, 2022 USD ($)	Dec. 07, 2021	Sep. 28, 2021 USD ($)
Line of Credit Facility [Line Items]
Fee on unused portion of revolving line of credit (percent)		0.375%	0.375%
Long-term Debt		$ 21,744,000	$ 14,513,000
Mortgages
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Long-term Debt		$ 4,600,000
Debt Instrument, Face Amount	$ 5,800,000
Debt Instrument, Term	20 years
Alternate Base Rate Loans
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		9.25%	5.00%
Revolving credit facility | PNC
Line of Credit Facility [Line Items]
Remaining borrowing capacity		$ 12,900,000	$ 20,400,000
Restated Credit Agreement | PNC
Line of Credit Facility [Line Items]
Credit agreement, dividends or payment on capital stock limit										$ 3,000,000
Trailing fixed charge coverage ratio related to capital stock transactions										1.20
Non-refundable fee										$ 50,000
Restated Credit Agreement | Revolving credit facility
Line of Credit Facility [Line Items]
Borrowing capacity		$ 65,000,000
Borrowing base limitation, advances as a percentage of eligible inventory component		60.00%
Borrowing base limitation, advances as a percentage of liquidation value of inventory component		85.00%
Additional capacity for January through July		$ 15,000.0
Restated Credit Agreement | Revolving credit facility | Maximum
Line of Credit Facility [Line Items]
Borrowing base limitation, advances as a percentage of eligible accounts receivable		85.00%
Restated Credit Agreement | Equipment loan
Line of Credit Facility [Line Items]
Equipment loan		$ 2,000,000
Restated Credit Agreement | Fourth quarter of fiscal year | Revolving credit facility
Line of Credit Facility [Line Items]
Borrowing capacity		$ 10,000,000
Period for reduced borrowings during fourth quarter of each fiscal year (consecutive days)		30 days
Amended And Restated Revolving Credit And Security Agreement, No. 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, No. 2 | Revolving credit facility
Line of Credit Facility [Line Items]
Borrowing capacity				$ 45,000,000	$ 40,000,000	$ 70,000,000	$ 65,000,000
Amended And Restated Revolving Credit And Security Agreement, No. 2 | Consecutive four fiscal quarters ending January 31, 2022
Line of Credit Facility [Line Items]
Fixed charge coverage ratio									1.00