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PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS (Tables)
3 Months Ended
Mar. 28, 2020
Retirement Benefits [Abstract]  
Schedule of Net Periodic Cost
The following table provides the components of net periodic cost for the Company’s pension, deferred compensation and executive supplemental life insurance retirement plans:
 Three Months Ended
March 28, 2020March 30, 2019
(in thousands)
Service cost$797  $630  
Interest cost2,355  2,875  
Expected return on plan assets(2,981) (3,235) 
Amortization of prior service cost (credit)(125) 91  
Amortization of net loss1,586  489  
Other adjustments125  —  
Net periodic cost$1,757  $850