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EMPLOYEE BENEFIT PLANS - Projected Benefit Obligation and Fair Value of Plan Assets for Pension Plans with Projected Benefit Obligations in Excess of Plan Assets (Details) - USD ($)
$ in Thousands
Dec. 28, 2019
Dec. 29, 2018
Retirement Benefits [Abstract]    
Projected benefit obligation $ 435,638 $ 273,625
Fair value of plan assets $ 343,688 $ 213,249