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Restructuring, Impairment and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 26, 2020	Jun. 27, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 28, 2019
Restructuring Cost and Reserve
Total restructuring charges	$ 1,277		$ 2,215	$ 4,826	$ 10,633
Impairment charges	0		322	36,078	322
Restructuring costs	1,277		2,537	40,904	10,955
Restructuring reserves	4,500			4,500		$ 2,700
Employee terminations
Restructuring Cost and Reserve
Total restructuring charges	1,198		813	4,614	8,878
Other restructuring charges
Restructuring Cost and Reserve
Total restructuring charges	79		1,402	212	1,755
Electronics
Restructuring Cost and Reserve
Total restructuring charges	388		783	2,125	4,294
Impairment charges	0		0	0	0
Restructuring costs	388		783	2,125	4,294
Electronics \| Employee terminations
Restructuring Cost and Reserve
Total restructuring charges	388		655	2,125	4,153
Electronics \| Other restructuring charges
Restructuring Cost and Reserve
Total restructuring charges	0		128	0	141
Automotive
Restructuring Cost and Reserve
Total restructuring charges	162		1,259	878	5,195
Impairment charges	0		322	33,841	322
Restructuring costs	162		1,581	34,719	5,517
Automotive \| Employee terminations
Restructuring Cost and Reserve
Total restructuring charges	162		109	770	3,955
Automotive \| Other restructuring charges
Restructuring Cost and Reserve
Total restructuring charges	0		1,150	108	1,240
Industrial
Restructuring Cost and Reserve
Total restructuring charges	727		173	1,823	1,144
Impairment charges	0		0	2,237	0
Restructuring costs	727		173	4,060	1,144
Industrial \| Employee terminations
Restructuring Cost and Reserve
Total restructuring charges	648		49	1,719	770
Industrial \| Other restructuring charges
Restructuring Cost and Reserve
Total restructuring charges	$ 79		$ 124	$ 104	$ 374
Industrial \| Facility Closing
Restructuring Cost and Reserve
Impairment charges		$ 2,200