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VENTURE CAPITAL INVESTMENTS AND STRATEGIC EQUITY INVESTMENTS - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Marketable Securities and Equity-Method Affiliates [Abstract]
Venture capital investments	$ 197,100	$ 108,983
Total commitment	139,900
Amount funded for venture capital investments	95,300
Dividends received	27,600	11,400	$ 18,200
Gains related to venture capital investments	(100,400)	(20,700)	$ (15,900)
Consolidated retained earnings	76,800	20,600
Strategic equity investments	$ 24,704	$ 13,996

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50% or less owned persons accounted for by the equity method (equity method investees).

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