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INVESTMENTS IN SECURITIES (Tables)
 6 Months Ended
Jun. 27, 2021
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-For-Sale Securities The following table summarizes our investments in available-for-sale securities:
June 27, 2021December 27, 2020
CostFair ValueCostFair Value
(In thousands)
Cash equivalents:
Fixed income securities$34,123 $34,123 $178,677 $178,677