Fair Value of Assets and Liabilities - Goodwill Impairment (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 28, 2024	Dec. 27, 2025	Dec. 28, 2024	Dec. 30, 2023
Impairment Charge
Impairment			$ 47,800,000
Impairments		$ 301,185,000	44,763,000	$ 0
Transportation Segment
Impairment Charge
Impairments		0	8,616,000
Electronics
Impairment Charge
Impairments		301,185,000	0
Industrial Controls
Impairment Charge
Impairment			47,579,000
Impairments	$ 36,100,000		36,147,000
Industrial Controls | Customer relationships, trademarks, and tradenames
Impairment Charge
Impairment			40,641,000
Industrial Controls | Patents, licenses, and software
Impairment Charge
Impairment			6,938,000
Automotive Sensors
Impairment Charge
Impairments	8,600,000		8,616,000
Level 3 | Estimated Fair Value | Industrial Controls
Assets, Fair Value Disclosure
Intangible assets, net of amortization	7,570,000		7,570,000
Goodwill	119,361,000	238,057,000	119,361,000
Level 3 | Estimated Fair Value | Industrial Controls | Customer relationships, trademarks, and tradenames
Assets, Fair Value Disclosure
Intangible assets, net of amortization	6,620,000		6,620,000
Level 3 | Estimated Fair Value | Industrial Controls | Patents, licenses, and software
Assets, Fair Value Disclosure
Intangible assets, net of amortization	950,000		950,000
Level 3 | Estimated Fair Value | Automotive Sensors
Assets, Fair Value Disclosure
Goodwill	0		0
Level 3 | Carrying Value | Industrial Controls
Assets, Fair Value Disclosure
Intangible assets, net of amortization	8,207,000		8,207,000
Goodwill	115,159,000	$ 238,486,000	115,159,000
Level 3 | Carrying Value | Industrial Controls | Customer relationships, trademarks, and tradenames
Assets, Fair Value Disclosure
Intangible assets, net of amortization	7,142,000		7,142,000
Level 3 | Carrying Value | Industrial Controls | Patents, licenses, and software
Assets, Fair Value Disclosure
Intangible assets, net of amortization	1,065,000		1,065,000
Level 3 | Carrying Value | Automotive Sensors
Assets, Fair Value Disclosure
Goodwill	$ 0		$ 0