Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 30, 2023	Dec. 31, 2022	Dec. 25, 2021
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance, beginning of year		$ 199	$ 290	$ 128
Additions (reductions) not charged to expense	[1]	5	(8)	14
Additions (reduction) charged (credited) to expense		140	122	149
Deductions/write-offs		4	205	1
Balance, end of year		340	199	290
SEC Schedule, 12-09, Reserve, Inventory [Member]
Balance, beginning of year		26,871	23,012	26,937
Additions (reductions) not charged to expense	[1]	648	698	(2,926)	[2]
Additions (reduction) charged (credited) to expense		4,540	7,179	7,102
Deductions/write-offs		11,641	4,018	8,101
Balance, end of year		$ 20,418	$ 26,871	$ 23,012

[1] Changes in reserve balances resulting from foreign currency impact and reclassifications from other reserves.

[2] Reductions not charged to expense includes $2.2 million transferred as part of the sale of our PCB Test business.