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Discontinued Operations (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 28, 2020 | Jun. 30, 2019 | Jun. 28, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Consolidated income from continuing operations before taxes | $ 3,573,000 | $ 45,351,000 | $ 20,656,000 | $ 79,456,000 |
Grass Valley | Discontinued Operations, Held-for-sale [Member] |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Asset Impairment Charges | 89,810,000 | 0 | 113,007,000 | 0 |
Capital Expenditure, Discontinued Operations | 8,500,000 | 8,700,000 | 16,400,000 | 14,500,000 |
Share-based Compensation, Discontinued Operations | 0.0 | $ 300,000 | 900,000 | $ 600,000 |
Accumulated Other Comprehensive Income (Loss), net of tax, Discontinued Operations | $ 11.5 |  | $ 11.5 |  | $ 42.3

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