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VENTURE CAPITAL AND OTHER INVESTMENTS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Dec. 29, 2018
Schedule of Equity Method Investments [Line Items]
Venture capital investments	$ 100,553		$ 100,553		$ 87,545
Committed contribution	128,100		128,100
Amount funded for venture capital investments	77,400		77,400
Dividends received	200	$ 5,600	1,800	$ 14,100
Gains (losses) recognized from venture capital investments	(600)	$ 5,400	5,700	$ 22,800
Other equity investments	$ 13,045		$ 13,045		$ 1,046
Minimum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	1.00%		1.00%
Maximum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	12.00%		12.00%

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