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PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS
 9 Months Ended
Sep. 29, 2018
Retirement Benefits [Abstract]  
PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS
PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS
The Company retrospectively adopted ASU 2017-07 in fiscal year 2018. Service cost is reflected in Cost of services provided (excluding amortization of intangible assets) and Selling, general and administrative within the unaudited condensed consolidated statements of income. All other components of net periodic cost are recorded in Other income, net within the unaudited condensed consolidated statements of income. See Note 1, “Basis of Presentation.” 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


The net periodic cost for the Company’s other post-retirement benefit plan for the three and nine months ended September 29, 2018 and September 30, 2017 was not significant.