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Debt (Narrative) (Details) | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
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 ($)
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 | $ 15,000,000 |  |  |  |  |  |  |
Rate increase in event of default (percent) | 2.00% |  |  |  |  |  |  |
Interest rate (percent) | 5.00% |  |  |  |  |  |  |
Fee on unused portion of revolving line of credit (percent) | 0.375% |  |  |  |  |  |  |
Remaining borrowing capacity | $ 20,449,000 |  |  |  |  |  |  |
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 | Revolving credit facility | Alternative Base Rate | Maximum |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Applicable margin (percent) | 1.75% |  |  |  |  |  |  |
Restated Credit Agreement | Revolving credit facility | Alternative Base Rate | Minimum |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Applicable margin (percent) | 1.25% |  |  |  |  |  |  |
Restated Credit Agreement | Revolving credit facility | LIBOR | Maximum |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Applicable margin (percent) | 2.75% |  |  |  |  |  |  |
Restated Credit Agreement | Revolving credit facility | LIBOR | Minimum |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Applicable margin (percent) | 2.25% |  |  |  |  |  |  |
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 |  |  |  |  |  |  |
Restated Credit Agreement | Consecutive four fiscal quarters ending October 31, 2021 |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Fixed charge coverage ratio |  |  |  |  |  |  | 1.10 |
Restated Credit Agreement | Consecutive four fiscal quarters ending January 31, 2022 and April 30, 2022 |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Fixed charge coverage ratio |  |  |  |  |  |  | 1.00 |
Restated Credit Agreement | Consecutive four fiscal quarters after April 30, 2022 |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Fixed charge coverage ratio |  |  |  |  |  |  | 1.10 |
Amended And Restated Revolving Credit And Security Agreement, No. 2 | Revolving credit facility | Forecast |  |  |  |  |  |  |  |
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 |
Amended And Restated Revolving Credit And Security Agreement, No. 2 | Subsequent Event |  |  |  |  |  |  |  |
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 |  |

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