Restructuring, Impairment and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Apr. 30, 2019	Dec. 29, 2018
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 5,683	$ 3,134	$ 8,418	$ 3,913
Impairment charges		1,125		1,125
Restructuring costs	5,683	4,259	8,418	5,038
Restructuring reserves	4,800		4,800			$ 3,900
Employee terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	5,613	2,464	8,065	3,243
Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	70	670	353	670
Facility closing | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost					$ 1,700
Electronics
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	1,698	3,072	3,511	3,749
Impairment charges		0		0
Restructuring costs	1,698	3,072	3,511	3,749
Electronics | Employee terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	1,698	2,402	3,498	3,079
Electronics | Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	670	13	670
Automotive
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	3,311	0	3,936	99
Impairment charges		88		88
Restructuring costs	3,311	88	3,936	187
Automotive | Employee terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	3,241	0	3,846	99
Automotive | Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	70	0	90	0
Industrial
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	674	62	971	65
Impairment charges		1,037		1,037
Restructuring costs	674	1,099	971	1,102
Industrial | Employee terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	674	62	721	65
Industrial | Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 0	$ 0	$ 250	$ 0