SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) - Narrative (Details) - USD ($)		3 Months Ended	12 Months Ended
	Apr. 04, 2017	Dec. 31, 2017	Apr. 01, 2018	Apr. 02, 2017	Apr. 03, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax charge related to estimated impacts of Tax Cuts and Jobs Act			$ 114,200,000
Interest expense			27,352,000	$ 16,878,000	$ 7,043,000
Asset impairment			9,800,000
Impairment charge in carrying amount of intangible asset			7,800,000	1,300,000
Fox Enterprises Inc
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment charge in carrying amount of intangible asset				$ 300,000
Gain (loss) on divestiture		$ (700,000)
High-Speed Converter Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on divestiture		$ 1,300,000
Senior Notes | Term B Loan
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Principal amount	$ 200,000,000
Debt instrument, term	7 years
Interest expense			9,500,000
In-process research and development (IPR&D)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment charge in carrying amount of intangible asset			$ 2,000,000