Restructuring, Impairment and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				$ 10,365	$ 2,227	$ 3,995
Impairment charges				2,218	0	14,809
Total	$ 2,400	$ 5,200	$ 4,200	12,583	2,227	18,804
Restructuring reserves	$ 3,900			3,900	1,500
Employee terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				9,503	1,993	1,528
Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				862	234	2,467
Electronics
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				9,412	1,478	1,744
Impairment charges				0	0	0
Total				9,412	1,478	1,744
Electronics | Employee terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				8,742	1,244	135
Electronics | Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				670	234	1,609
Automotive
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				826	371	374
Impairment charges				88	0	0
Total				914	371	374
Automotive | Employee terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				634	371	299
Automotive | Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				192	0	75
Industrial
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				127	378	1,877
Impairment charges				2,130	0	14,809
Total				2,257	378	16,686
Goodwill impairment						8,800
Impairment of intangible assets						6,000
Industrial | Trade Name
Restructuring Cost and Reserve [Line Items]
Impairment of intangible assets						3,800
Industrial | Customer relationships
Restructuring Cost and Reserve [Line Items]
Impairment of intangible assets						2,200
Industrial | Employee terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				127	378	1,094
Industrial | Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges				$ 0	$ 0	$ 783