Leases - Lessee Operating Lease Right of Use Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jul. 30, 2023	Apr. 30, 2023	[1]	Jul. 31, 2022
Assets and Liabilities, Lessee [Abstract]
Right of use assets	$ 7,466	$ 8,191		$ 14,556
Operating lease liability - current	2,558	2,640		3,126
Operating lease liability - noncurrent	$ 2,994	$ 3,612		$ 6,160

[1] Derived from audited consolidated financial statements.