Summary of Significant Accounting Policies and Other Information - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Disaggregation of Revenue
Net sales	$ 391,566	$ 361,971	$ 1,044,999	$ 1,165,350
Electronics – Passive Products and Sensors
Disaggregation of Revenue
Net sales	108,253	94,766	285,697	311,624
Electronics – Semiconductor
Disaggregation of Revenue
Net sales	147,096	132,486	407,112	440,575
Passenger Car Products
Disaggregation of Revenue
Net sales	52,691	53,889	135,645	164,348
Automotive Sensors
Disaggregation of Revenue
Net sales	26,093	23,877	64,166	74,616
Commercial Vehicle Products
Disaggregation of Revenue
Net sales	25,940	26,915	71,682	87,850
Industrial Products
Disaggregation of Revenue
Net sales	31,493	30,038	80,697	86,337
Electronics Segment
Disaggregation of Revenue
Net sales	255,349	227,252	692,809	752,199
Electronics Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue
Net sales	108,253	94,766	285,697	311,624
Electronics Segment | Electronics – Semiconductor
Disaggregation of Revenue
Net sales	147,096	132,486	407,112	440,575
Electronics Segment | Passenger Car Products
Disaggregation of Revenue
Net sales	0	0	0	0
Electronics Segment | Automotive Sensors
Disaggregation of Revenue
Net sales	0	0	0	0
Electronics Segment | Commercial Vehicle Products
Disaggregation of Revenue
Net sales	0	0	0	0
Electronics Segment | Industrial Products
Disaggregation of Revenue
Net sales	0	0	0	0
Automotive Segment
Disaggregation of Revenue
Net sales	104,724	104,681	271,493	326,814
Automotive Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue
Net sales	0	0	0	0
Automotive Segment | Electronics – Semiconductor
Disaggregation of Revenue
Net sales	0	0	0	0
Automotive Segment | Passenger Car Products
Disaggregation of Revenue
Net sales	52,691	53,889	135,645	164,348
Automotive Segment | Automotive Sensors
Disaggregation of Revenue
Net sales	26,093	23,877	64,166	74,616
Automotive Segment | Commercial Vehicle Products
Disaggregation of Revenue
Net sales	25,940	26,915	71,682	87,850
Automotive Segment | Industrial Products
Disaggregation of Revenue
Net sales	0	0	0	0
Industrial Segment
Disaggregation of Revenue
Net sales	31,493	30,038	80,697	86,337
Industrial Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue
Net sales	0	0	0	0
Industrial Segment | Electronics – Semiconductor
Disaggregation of Revenue
Net sales	0	0	0	0
Industrial Segment | Passenger Car Products
Disaggregation of Revenue
Net sales	0	0	0	0
Industrial Segment | Automotive Sensors
Disaggregation of Revenue
Net sales	0	0	0	0
Industrial Segment | Commercial Vehicle Products
Disaggregation of Revenue
Net sales	0	0	0	0
Industrial Segment | Industrial Products
Disaggregation of Revenue
Net sales	$ 31,493	$ 30,038	$ 80,697	$ 86,337