Summary of Significant Accounting Policies and Other Information - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Net sales	$ 402,281	$ 439,191	$ 459,183	$ 417,813	$ 304,849	$ 317,889	$ 313,355	$ 285,441	$ 1,718,468	$ 1,221,534	$ 1,056,159
Electronics – Passive Products and Sensors
Disaggregation of Revenue [Line Items]
Net sales									648,967
Electronics – Semiconductor
Disaggregation of Revenue [Line Items]
Net sales									475,329
Passenger Car Products
Disaggregation of Revenue [Line Items]
Net sales									240,501
Automotive Sensors
Disaggregation of Revenue [Line Items]
Net sales									121,562
Commercial Vehicle Products
Disaggregation of Revenue [Line Items]
Net sales									117,728
Industrial Products
Disaggregation of Revenue [Line Items]
Net sales									114,381
Electronics Segment
Disaggregation of Revenue [Line Items]
Net sales									1,124,296	661,928	535,191
Electronics Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue [Line Items]
Net sales									648,967
Electronics Segment | Electronics – Semiconductor
Disaggregation of Revenue [Line Items]
Net sales									475,329
Electronics Segment | Passenger Car Products
Disaggregation of Revenue [Line Items]
Net sales									0
Electronics Segment | Automotive Sensors
Disaggregation of Revenue [Line Items]
Net sales									0
Electronics Segment | Commercial Vehicle Products
Disaggregation of Revenue [Line Items]
Net sales									0
Electronics Segment | Industrial Products
Disaggregation of Revenue [Line Items]
Net sales									0
Automotive Segment
Disaggregation of Revenue [Line Items]
Net sales									479,791	453,227	415,200
Automotive Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue [Line Items]
Net sales									0
Automotive Segment | Electronics – Semiconductor
Disaggregation of Revenue [Line Items]
Net sales									0
Automotive Segment | Passenger Car Products
Disaggregation of Revenue [Line Items]
Net sales									240,501
Automotive Segment | Automotive Sensors
Disaggregation of Revenue [Line Items]
Net sales									121,562
Automotive Segment | Commercial Vehicle Products
Disaggregation of Revenue [Line Items]
Net sales									117,728
Automotive Segment | Industrial Products
Disaggregation of Revenue [Line Items]
Net sales									0
Industrial Segment
Disaggregation of Revenue [Line Items]
Net sales									114,381	$ 106,379	$ 105,768
Industrial Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue [Line Items]
Net sales									0
Industrial Segment | Electronics – Semiconductor
Disaggregation of Revenue [Line Items]
Net sales									0
Industrial Segment | Passenger Car Products
Disaggregation of Revenue [Line Items]
Net sales									0
Industrial Segment | Automotive Sensors
Disaggregation of Revenue [Line Items]
Net sales									0
Industrial Segment | Commercial Vehicle Products
Disaggregation of Revenue [Line Items]
Net sales									0
Industrial Segment | Industrial Products
Disaggregation of Revenue [Line Items]
Net sales									$ 114,381