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Discontinued Operations - Schedule of Components of Discontinued Operations of Statements of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 28, 2020 | Sep. 28, 2020
Discontinued Operations And Disposal Groups [Abstract] |  |
Net sales |  | $ 143,951
Cost of goods sold |  | 136,800
Gross profit |  | 7,151
Operating expenses: |  |
Selling and marketing |  | 1,461
General and administrative |  | 2,317
Research and development |  | 147
Amortization of definite-lived intangibles |  | 809
Total operating expenses |  | 4,734
Operating income |  | 2,417
Other (expense) income: |  |
Interest expense |  | (223)
Gain on sale of the Mobility business unit |  | 237,253
Other, net |  | 1,160
Total other income, net |  | 238,190
Income from discontinued operations before income taxes |  | 240,607
Income tax benefit (provision) | $ 20,021 | (46,686)
Income from discontinued operations, net of income taxes | $ 20,021 | $ 193,921
Earnings per share from discontinued operations: |  |
Basic earnings per share | $ 0.19 | $ 1.83
Diluted earnings per share | $ 0.19 | $ 1.83

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