Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Income Taxes [Line Items]
Provision for income taxes	$ 116,000	$ 500,000	$ 502,000	$ 526,000
Income tax provision on earnings of subsidiaries	44,000	390,000	180,000	364,000
Profit Threshold Upto Which Corporate Alternative Minimum Tax Is Not Applicable	1,000,000,000
Foreign Tax Authority | Singapore
Income Taxes [Line Items]
Income tax charge (benefit)	$ 158,000	$ 107,000	$ 320,000	$ 158,000