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PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS (Tables)
6 Months Ended
Jun. 30, 2018
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)
2018
 
2017
 
2018
 
2017
Interest cost
$
167

 
$
233

 
$
398

 
$
462

Expected return on plan assets
(345
)
 
(264
)
 
(604
)
 
(528
)
Amortization of net actuarial loss
192

 
300

 
490

 
596

Net periodic cost
$
14

 
$
269

 
$
284

 
$
530

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)
2018
 
2017
 
2018
 
2017
Interest cost
$
98

 
$
100

 
$
195

 
$
215

Amortization of net actuarial loss
43

 
25

 
86

 
51

Amortization of net transition obligation
4

 
5

 
9

 
9

Amortization of prior service cost
4

 
4

 
9

 
8

Settlement

 
138

 

 
138

Net periodic cost
$
149

 
$
272

 
$
299

 
$
421