General and Summary of Significant Accounting Policies - Summary of Cash and Cash Equivalents by Geographic Area (Detail) - USD ($) $ in Thousands	Apr. 28, 2024	Apr. 30, 2023
Cash and Cash Equivalents [Line Items]
cash and cash equivalents	$ 10,012	$ 20,964
United States [Member]
Cash and Cash Equivalents [Line Items]
cash and cash equivalents	2,912	9,769
China [Member]
Cash and Cash Equivalents [Line Items]
cash and cash equivalents	6,554	10,669
Canada [Member]
Cash and Cash Equivalents [Line Items]
cash and cash equivalents	371	281
Haiti [Member]
Cash and Cash Equivalents [Line Items]
cash and cash equivalents	86	236
Vietnam [Member]
Cash and Cash Equivalents [Line Items]
cash and cash equivalents	81
Cayman Islands [Member]
Cash and Cash Equivalents [Line Items]
cash and cash equivalents	$ 8	$ 9