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PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS (Tables)
6 Months Ended
Jun. 30, 2017
Pension Plan  
PENSION PLANS  
Schedule of components of net periodic benefit cost
The following table sets forth the components of net periodic benefit cost for the Pension Plan for the periods indicated:
 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
(dollars in thousands)
2017
 
2016
 
2017
 
2016
Interest cost
$
233

 
$
344

 
$
462

 
$
687

Expected return on plan assets
(264
)
 
(439
)
 
(528
)
 
(878
)
Amortization of net actuarial loss
300

 
354

 
596

 
708

Net periodic cost
$
269

 
$
259

 
$
530

 
$
517

SERPs  
PENSION PLANS  
Schedule of components of net periodic benefit cost
The following table sets forth the components of net periodic benefit cost for the SERPs for the periods indicated:
 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
(dollars in thousands)
2017
 
2016
 
2017
 
2016
Interest cost
$
100

 
$
117

 
$
215

 
$
233

Amortization of net actuarial loss
25

 
12

 
51

 
25

Amortization of net transition obligation
5

 
4

 
9

 
8

Amortization of prior service cost
4

 
5

 
8

 
10

Settlement
138

 

 
138

 

Net periodic cost
$
272

 
$
138

 
$
421

 
$
276