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Defined Benefit Plans (Tables)
9 Months Ended
Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Components of net periodic benefit cost
The components of net periodic benefit cost were as follows:

 
Quarter Ended
 
Three Quarters Ended
 
September 30, 2015
 
September 24, 2014
 
September 30, 2015
 
September 24, 2014
 
(In thousands)
Pension Plan:
 
 
 
 
 
 
 
Service cost
$
95

 
$
95

 
$
285

 
$
285

Interest cost
745

 
775

 
2,237

 
2,325

Expected return on plan assets
(877
)
 
(988
)
 
(2,631
)
 
(2,965
)
Amortization of net loss
434

 
231

 
1,300

 
693

Net periodic benefit cost
$
397

 
$
113

 
$
1,191

 
$
338

 
 
 
 
 
 
 
 
Other Defined Benefit Plans:
 
 
 
 
 
 
 
Interest cost
$
26

 
$
31

 
$
80

 
$
93

Amortization of net loss
20

 
15

 
59

 
46

Settlement loss recognized

 
33

 

 
58

Net periodic benefit cost
$
46

 
$
79

 
$
139

 
$
197