Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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INVESTMENTS IN SECURITIES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019	Dec. 29, 2019
Debt Securities, Available-for-sale [Line Items]
Gross realized gains	$ 1,500	$ 4,100	$ 3,900	$ 9,300
Fixed income securities
Debt Securities, Available-for-sale [Line Items]
Cost	120,841		120,841		$ 159,623
Fair Value	120,841		120,841		159,623
Other
Debt Securities, Available-for-sale [Line Items]
Cost	99,697		99,697		0
Fair Value	$ 99,697		$ 99,697		$ 0