Commitments and Contingencies - Narrative (Detail) - USD ($)	Jul. 31, 2022	May 01, 2022	[1]	Aug. 01, 2021
Commitments and Contingencies Disclosure [Line Items]
Accounts payable for capital expenditures	$ 346,000	$ 473,000		$ 48,000
Mattress Fabrics [Member] | Capital Addition Purchase Commitments [Member]
Commitments and Contingencies Disclosure [Line Items]
Open purchase commitments for equipment	$ 240,000

[1] Derived from audited financial statements.