Debt instrument additional basis spread.

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- Definition

Description of any adjustments made to the stated rate to determine the effective rate.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

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Balance Type:	debit
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

Disclosure of timing of required repayments, sinking fund requirements, and other redeemable securities at fixed or determinable prices and dates in the five years immediately following the date of the latest balance sheet presented in the financial statements, and the amount thereafter to fully repay the principal of long-term debt. These disclosures may be made either on an individual debt or security basis, by type of debt or security basis, or on a combined basis.

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Maturity date of long-term debt, in YYYY-MM-DD format.

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Credit Agreement and Long- Term Debt - Additional Information (Detail) - USD ($)		12 Months Ended
	Mar. 24, 2021	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Debt Instrument [Line Items]
Interest expense on long term debt		$ 677,000	$ 955,000	$ 682,000
Principal payment terms		The Amended Credit Agreement requires that the term loan be paid in quarterly installments on the last day of each of our fiscal quarters with the final payment due on September 30, 2025.
Interest Expense [Member]
Debt Instrument [Line Items]
Interest expense on long term debt		$ 300,000	$ 500,000	$ 400,000
Term Loan [Member]
Debt Instrument [Line Items]
Longterm Debt instrument, maturity date		Sep. 30, 2025
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Variable interest rate		0.50
LIBOR [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		1.00%
Federal Funds Effective Swap Rate [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		0.50%
Minimum [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Commitment fee rate		0.15%
Percentage added to variable rate		0.60%
Minimum [Member] \| LIBOR [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		1.60%
Maximum [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Commitment fee rate		0.30%
Percentage added to variable rate		1.30%
Maximum [Member] \| LIBOR [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		2.30%
Bank of America, N.A. [Member]
Debt Instrument [Line Items]
Term loans repaid	$ 2,600,000
Bank of America, N.A. [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Principal amount of debt		$ 10,000,000.0
Term loan, principal amount		10,000,000.0
Bank of America, N.A. [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 22,500,000
Revolving line of credit, Outstanding loan amount weighted average interest rate		4.10%	3.41%
Commitement fees on the undrawn portion of the credit facility		$ 50,000	$ 8,300
Line of credit remaining borrowing capacity		22,500,000
Bank of America, N.A. [Member] \| Revolving Credit Facility [Member] \| Other Expense [Member]
Debt Instrument [Line Items]
Interest Expense, Debt		4,000	$ 188,000
Bank of America, N.A. [Member] \| Maximum [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Principal amount of debt		10,000,000.0
Term loan, principal amount		$ 10,000,000.0