Financial Instruments Measured at Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024	Dec. 31, 2024
Financial Instruments Measured at Fair Value
Debt and equity securities, unrealized gains (losses)	$ 3,600	$ 1,600	$ 4,100	$ (8,500)
Marubun
Financial Instruments Measured at Fair Value
Equity method investment, ownership percentage	9.00%		9.00%
Fair value, measurements, recurring
Financial Instruments Measured at Fair Value
Cash equivalents	$ 12,816		$ 12,816		$ 10,751
Equity investments	42,211		42,211		42,907
Foreign exchange contracts designated as net investment hedges	16,192		16,192		53,679
Total fair value assets and liabilities measured on recurring basis	71,219		71,219		107,337
Fair value, measurements, recurring | Fair value, inputs, level 1
Financial Instruments Measured at Fair Value
Cash equivalents	12,816		12,816		10,751
Equity investments	42,211		42,211		42,907
Foreign exchange contracts designated as net investment hedges	0		0		0
Total fair value assets and liabilities measured on recurring basis	55,027		55,027		53,658
Fair value, measurements, recurring | Fair value, inputs, level 2
Financial Instruments Measured at Fair Value
Cash equivalents	0		0		0
Equity investments	0		0		0
Foreign exchange contracts designated as net investment hedges	16,192		16,192		53,679
Total fair value assets and liabilities measured on recurring basis	16,192		16,192		53,679
Fair value, measurements, recurring | Fair value, inputs, level 3
Financial Instruments Measured at Fair Value
Cash equivalents	0		0		0
Equity investments	0		0		0
Foreign exchange contracts designated as net investment hedges	0		0		0
Total fair value assets and liabilities measured on recurring basis	$ 0		$ 0		$ 0