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PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS
 6 Months Ended
Jun. 26, 2021
Retirement Benefits [Abstract]  
PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS
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 EndedSix Months Ended
June 26, 2021June 27, 2020June 26, 2021June 27, 2020
(in thousands)
Service cost$911 $798 $1,822 $1,595 
Interest cost1,344 2,354 2,688 4,709 
Expected return on plan assets(1,983)(2,982)(3,967)(5,963)
Amortization of prior service cost (credit)(128)(126)(256)(251)
Amortization of net loss1,110 1,586 2,220 3,172 
Other adjustments(572)125 (572)250 
Net periodic cost$682 $1,755 $1,935 $3,512 
Service cost is recorded as an operating expense within the accompanying unaudited condensed consolidated statements of income. All other components of net periodic costs are recorded in Other expense, net in the accompanying unaudited condensed consolidated statements of income.
The net periodic cost for the Company’s other post-retirement benefit plan for the three and six months ended June 26, 2021 and June 27, 2020 was not significant.