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Debt (Narrative) (Details) |  | 9 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 10, 2020 USD ($) | Oct. 31, 2020 USD ($) | Sep. 08, 2020 USD ($) | Feb. 01, 2020 USD ($)
Line of Credit Facility [Line Items] |  |  |  |
Line Of Credit Facility, Borrowing Capacity, Term |  | $ 15,000,000 |  |
Line of credit facility, period for reduced borrowings during fourth quarter of each fiscal year (consecutive days) |  | 30 days |  |
Revolving credit facility bears interest increased |  | 2.00% |  |
Interest rate |  | 4.50% |  |
Unused portion fee rate |  | 0.375% |  |
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. 20 To Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Maximum fixed charge coverage ratio |  |  |  | 1.10
Amendment No. 20 To Credit Facility [Member] | Maximum [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Maximum capital expenditures |  |  |  | $ 8,000,000
Amendment No. 21 To Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Non-refundable fee |  |  | $ 75,000 |
Amendment No. 21 To Credit Facility [Member] | Consecutive Four Fiscal Quarters Ending July 31, 2020 |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Maximum fixed charge coverage ratio |  |  | 1.00 |
Amendment No. 21 To Credit Facility [Member] | Consecutive Four Fiscal Quarters Ending October 31, 2020 |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Maximum fixed charge coverage ratio |  |  | 1.00 |
Amendment No. 21 To Credit Facility [Member] | Consecutive Four Fiscal Quarters Ending Thereafter |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Maximum fixed charge coverage ratio |  |  | 1.10 |
Amendment No. 21 To Credit Facility [Member] | Minimum [Member] | Consecutive Four Fiscal Quarters Ending Thereafter |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Maximum fixed charge coverage ratio |  | 1.00 |  |
Amendment No. 21 To Credit Facility [Member] | Maximum [Member] | Consecutive Four Fiscal Quarters Ending Thereafter |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Maximum fixed charge coverage ratio |  | 1.10 |  |
Amendment No. 22 To Credit Facility [Member] | Subsequent Event [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Non-refundable fee | $ 40,000 |  |  |
Minimum coverage ratio | 1.10 |  |  |
Amendment No. 22 To Credit Facility [Member] | Maximum [Member] | Subsequent Event [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Covenant compliance, adjusted EBITDA | $ 2,000,000 |  |  |
PNC [Member] | Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Remaining borrowing capacity |  | $ 14,000,000 |  |
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 |  |
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 |  |
Line of credit facility, Equipment financing |  | $ 2,000,000 |  |
Eurodollar [Member] | Minimum [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Revolving credit facility bears interest range of |  | 2.25% |  |
Eurodollar [Member] | Maximum [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Revolving credit facility bears interest range of |  | 2.75% |  |
Alternate Base Rate Loans [Member] | London Interbank Offered Rate LIBOR [Member] | Minimum [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Revolving credit facility bears interest range of |  | 1.25% |  |
Alternate Base Rate Loans [Member] | London Interbank Offered Rate LIBOR [Member] | Maximum [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Revolving credit facility bears interest range of |  | 1.75% |  |

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- Definition The percentage points added to the reference rate or index during the adjustment period to compute the variable [fully indexed] rate on the loans receivable realized during the reporting period. This may be an effective margin for the period depending on the specific terms of the underlying loan agreement (for example, an annual disclosure for a loan with a quarterly adjustment period). + References No definition available. + Details
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