Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Name:	us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Common Stock Repurchase Program (Detail) - USD ($)	3 Months Ended
Common Stock Repurchase Program (Detail) - USD ($)	Aug. 01, 2021	Aug. 02, 2020	Mar. 31, 2020
Stockholders Equity Note [Line Items]
Cost of common stock repurchase	$ 723,000
Common Stock [Member]
Stockholders Equity Note [Line Items]
Common stock repurchased	48,686	0
Cost of common stock repurchase	$ 2,000
Remaining authorized repurchase amount	$ 4,300,000
Stock Repurchase Program March 2020 [Member] \| Common Stock [Member]
Stockholders Equity Note [Line Items]
Authorization amount for repurchase of common stock			$ 5,000,000.0