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Debt (Schedule of Debt Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2024	Dec. 29, 2023
Debt Instrument [Line Items]
Total debt, including current portion	$ 28,537	$ 30,036
Revolving Credit Facility
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description	October 2029
Total debt, including current portion	$ 0	0
Chinese Renminbi Revolving Credit Facility
Debt Instrument [Line Items]
Average interest rate	4.36%
Total debt, including current portion	$ 27,375	28,099
Notes payable to banks maturing 2023
Debt Instrument [Line Items]
Average interest rate	0.00%
Debt Instrument, Maturity Date, Description	2025
Total debt, including current portion	$ 1,162	$ 1,937

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