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Discontinued Operations - Narrative (Details) - USD ($)		3 Months Ended		9 Months Ended	24 Months Ended
Discontinued Operations - Narrative (Details) - USD ($)	Mar. 01, 2021	Sep. 26, 2021	Sep. 27, 2020	Mar. 28, 2021	Jun. 27, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Costs of selling business					$ 27,400,000
Term of certain silicon carbide materials and fabrication services	4 years
Non-operating expense, net		$ 800,000	$ 0
Discontinued Operations, Disposed of by Sale \| LED Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received from divestiture	$ 50,000,000
Unsecured promissory note issued to parent in disposition	125,000,000
Loss on sale		(29,100,000)
Goodwill impairment			105,700,000
Income tax expense			900,000
Supply Agreement liability	$ 31,000,000	17,500,000
Non-operating expense, net		800,000	$ 100,000
Other assets		3,100,000
Discontinued Operations, Disposed of by Sale \| LED Business \| Purchase Price Note \| Unsecured Promissory Note \| LIBOR
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Basis spread on variable rate of debt instrument (as a percent)	3.00%
Discontinued Operations, Disposed of by Sale \| LED Business \| Minimum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Potential earn-out payment	$ 2,500,000
Discontinued Operations, Disposed of by Sale \| LED Business \| Maximum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Potential earn-out payment	$ 125,000,000
Term of real estate license agreement	24 months
Discontinued Operations, Disposed of by Sale \| LED Business, Real Estate License Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Administrative fees		900,000
Discontinued Operations, Disposed of by Sale \| LED Business, Real Estate License Agreement \| Accounts Receivable, Net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Administrative fees		300,000
Discontinued Operations, Disposed of by Sale \| LED Business, Transition Services Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Administrative fees		2,900,000
Discontinued Operations, Disposed of by Sale \| LED Business, Transition Services Agreement \| Accounts Receivable, Net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Administrative fees		$ 900,000
Discontinued Operations, Held-for-sale \| LED Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill impairment				$ 105,700,000