Leases - Lessee Operating Lease Right of Use Assets and Liabilities (Detail) - USD ($) $ in Thousands	Aug. 01, 2021	May 02, 2021	[1]	Aug. 02, 2020
Assets And Liabilities Lessee [Abstract]
Right of use assets	$ 11,447	$ 11,730		$ 6,443
Operating lease liability - current	2,727	2,736		2,387
Operating lease liability – noncurrent	$ 6,665	$ 6,821		$ 4,214

[1] Derived from audited financial statements.