Discontinued Operations - Schedule of Components of Discontinued Operations of Statements of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 28, 2020	Dec. 30, 2019
Discontinued Operations And Disposal Groups [Abstract]
Net sales	$ 143,951	$ 556,098
Cost of goods sold	136,800	531,592
Gross profit	7,151	24,506
Operating expenses:
Selling and marketing	1,461	4,840
General and administrative	2,317	4,875
Research and development	147
Amortization of definite-lived intangibles	809	2,698
Restructuring charges		1,601
Total operating expenses	4,734	14,014
Operating income	2,417	10,492
Other (expense) income:
Interest expense	(223)	(1,147)
Gain on sale of the Mobility business unit	237,253
Other, net	1,160	2,513
Total other income, net	238,190	1,366
Income from discontinued operations before income taxes	240,607	11,858
Income tax provision	(46,686)	(2,478)
Income from discontinued operations, net of income taxes	$ 193,921	$ 9,380
Earnings per share from discontinued operations:
Basic earnings per share	$ 1.82	$ 0.09
Diluted earnings per share	$ 1.82	$ 0.09