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PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS (Tables)
9 Months Ended
Sep. 30, 2016
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:
 
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
(dollars in thousands)
2016
 
2015
 
2016
 
2015
Interest cost
$
343

 
$
349

 
$
1,030

 
$
1,045

Expected return on plan assets
(438
)
 
(471
)
 
(1,316
)
 
(1,415
)
Amortization of net actuarial loss
353

 
392

 
1,061

 
1,178

Net periodic cost
$
258

 
$
270

 
$
775

 
$
808

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:
 
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
(dollars in thousands)
2016
 
2015
 
2016
 
2015
Interest cost
$
117

 
$
110

 
$
350

 
$
330

Amortization of net actuarial loss
13

 
27

 
38

 
82

Amortization of net transition obligation
4

 
4

 
12

 
12

Amortization of prior service cost
4

 
5

 
14

 
15

Net periodic cost
$
138

 
$
146

 
$
414

 
$
439