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Pension and Other Postretirement Obligations (Tables)
 9 Months Ended
Oct. 02, 2016
Compensation and Retirement Disclosure [Abstract]  
Components of Net Periodic Benefit Costs
The following table provides the components of net periodic benefit costs for our pension and other postretirement benefit plans:
 
 
 
Pension Obligations
 
Other Postretirement Obligations
Three Months Ended
 
October 2, 2016
 
September 27, 2015
 
October 2, 2016
 
September 27, 2015
 
 
 
 
 
 
 
 
 
 
 
(In thousands)
Service cost
 
$
1,282

 
$
1,344

 
$
11

 
$
11

Interest cost
 
2,202

 
2,164

 
305

 
274

Expected return on plan assets
 
(2,931
)
 
(3,202
)
 
—

 
—

Amortization of prior service credit
 
(11
)
 
(15
)
 
(11
)
 
(16
)
Actuarial losses
 
659

 
1,349

 
29

 
107

Settlement loss
 
7,385

 
—

 
—

 
—

Net periodic benefit cost
 
$
8,586

 
$
1,640

 
$
334

 
$
376

Nine Months Ended
 
 
 
 
 
 
 
 
Service cost
 
$
4,118

 
$
4,562

 
$
40

 
$
43

Interest cost
 
7,020

 
6,909

 
1,152

 
1,076

Expected return on plan assets
 
(9,339
)
 
(9,515
)
 
—

 
—

Amortization of prior service credit
 
(29
)
 
(41
)
 
(33
)
 
(66
)
Actuarial losses
 
2,067

 
3,923

 
260

 
359

Settlement loss
 
7,385

 
—

 
—

 
—

Net periodic benefit cost
 
$
11,222

 
$
5,838

 
$
1,419

 
$
1,412