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Paycheck Protection Program Loan - Additional information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021	May 06, 2020
Extinguishment of Debt – PPP Loan	$ 4,466		$ 4,466
Paycheck Protection Program Loan [Member] | Green wood Credit Union [Member]
Debt instrument face amount				$ 4,400
Loan, payment terms			The PPP Loan, which would have been set to mature on May 6, 2022, was unsecured and bore interest at a rate of 1.0% per annum accruing from the loan date
Loan, maturity date			May 06, 2022
Loan, interest rate	1.00%		1.00%
Loan, payments due		$ 0
Amount of PPP loan forgiven			$ 4,400
Extinguishment of Debt – PPP Loan			$ 4,500

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