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Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 28, 2018 | Dec. 29, 2017
Income Tax Disclosure [Abstract] |  |
Deferred Tax Liabilities, Noncurrent assets of discontinued operations held for sale | $ 0 | $ 701,000
Deferred Tax Assets, Gross, Noncurrent | 3,937,000 | 4,152,000
Deferred Tax Liabilities, Gross, Noncurrent | 203,910,000 | 145,364,000
Deferred Income Tax Liabilities, Net | (203,910,000.000) | (140,964,000.000)
Deferred Tax Liabilities, Noncurrent liabilities of discontinued operations held for sale | 0 | (4,400,000)
Components of Deferred Tax Assets and Liabilities [Abstract] |  |
Net operating loss carryforwards | 18,088,000 | 107,005,000
Tax credit carryforwards | 24,593,000 | 28,215,000
Inventories | 3,408,000 | 4,956,000
Accrued expenses | 39,000 | 3,815,000
Stock-based compensation | 2,340,000 | 5,531,000
Gross deferred tax assets | 48,468,000 | 149,522,000
Less valuation allowance | (34,339,000) | (36,480,000)
Net deferred tax assets | 14,129,000 | 113,042,000
Property, plant and equipment | (9,445,000) | (27,547,000)
Intangible assets | (198,648,000) | (219,576,000)
Convertible subordinated notes | 0 | (806,000)
Other | (6,009,000) | (6,325,000)
Gross deferred tax liabilities | (214,102,000) | (254,254,000)
Net deferred tax liability | $ (199,973,000) | $ (141,212,000)

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