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PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS (Tables)
9 Months Ended
Sep. 29, 2018
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
 
Nine Months Ended
 
September 29, 2018
 
September 30, 2017
 
September 29, 2018
 
September 30, 2017
 
(in thousands)
Service cost
$
814


$
749

 
$
2,629

 
$
2,277

Interest cost
2,752


2,663

 
8,241

 
8,428

Expected return on plan assets
(3,801
)

(3,476
)
 
(11,690
)
 
(10,411
)
Amortization of prior service credit
(135
)

(134
)
 
(406
)
 
(392
)
Amortization of net loss
736


1,017

 
2,267

 
3,030

Net periodic cost
$
366

 
$
819

 
$
1,041

 
$
2,932