Decrease for amounts of indebtedness forgiven by the holder of the debt instrument.

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Paycheck Protection Program Loan - Additional information (Detail) - USD ($) $ in Thousands				3 Months Ended	6 Months Ended
	Jul. 31, 2021	Jun. 15, 2021	May 01, 2021	Jul. 31, 2021	Jul. 31, 2021	Jun. 30, 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, is unsecured and bears interest at a rate of 1.0% per annum, accruing from the loan date, and is payable monthly.
Loan, maturity date	May 06, 2022
Loan, interest rate	1.00%			1.00%	1.00%
Loan, payments due			$ 0
Amount of PPP loan forgiven		$ 4,400
Extinguishment of Debt – PPP Loan				$ 4,500		$ 4,500