Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($)		Apr. 28, 2024	Apr. 30, 2023	May 01, 2022	May 02, 2021
deferred tax assets:
accounts receivable		$ 195,000	$ 297,000
inventories		1,972,000	3,277,000
compensation		2,152,000	2,676,000
liabilities and other		8,000	5,000
intangible assets and goodwill		349,000	395,000
property, plant, and equipment (1)	[1]	171,000	179,000
operating lease liability		693,000	781,000
foreign income tax credits - U.S.		783,000	783,000
loss carryforwards – U.S.		18,344,000	13,564,000
valuation allowance - U.S.		(22,004,000)	(18,675,000)	$ (11,857,000)	$ (11,674,000)
total deferred tax assets		2,663,000	3,282,000
deferred tax liabilities:
undistributed earnings on foreign subsidiaries		(4,840,000)	(4,213,000)
property, plant and equipment (2)	[2]	(2,694,000)	(3,450,000)
right of use assets		(851,000)	(964,000)
other		(139,000)	(129,000)
total deferred tax liabilities		(8,524,000)	(8,756,000)
Net deferred liabilities		$ (5,861,000)	$ (5,474,000)

[1] Pertains to the company’s operations located in China.

[2] Pertains to the company’s operations located in the U.S. and Canada.