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Discontinued Operations - Results of Discontinued Operations (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2018 | Jun. 25, 2017 | Jul. 01, 2018 | Jun. 25, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income (loss) from operations of discontinued components | $ (5.7) | $ 1.3 | $ (9.6) | $ 1.6
Income tax benefit (expense) | 1.8 | (0.6) | 2.2 | (0.8)
Income (loss) from discontinued operations | (3.9) | 0.7 | (7.4) | 0.8
Herley | Disposed of by Sale |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Revenue | 19.2 | 37.9 | 43.1 | 74.7
Cost of sales | 14.5 | 28.0 | 33.4 | 55.8
Selling, general and administrative expenses | 8.5 | 8.7 | 16.6 | 17.4
Other (income) expense, net | 1.9 | (0.1) | 2.7 | (0.1)
Income (loss) from discontinued operations before income taxes | (5.7) | 1.3 | (9.6) | 1.6
Gain on disposal of discontinued operations before income taxes | 0.0 | 0.0 | 0.0 | 0.0
Income (loss) from operations of discontinued components | (5.7) | 1.3 | (9.6) | 1.6
Income tax benefit (expense) | 1.8 | (0.6) | 2.2 | (0.8)
Income (loss) from discontinued operations | $ (3.9) | $ 0.7 | $ (7.4) | $ 0.8

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