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SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN (Tables)
6 Months Ended
Jun. 30, 2016
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]  
Components of net periodic pension cost

The components of net periodic pension cost were as follows (in thousands):

 

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

 

 

2016

 

 

2015

 

 

2016

 

 

2015

 

Service cost

 

$

350

 

 

$

319

 

 

$

708

 

 

$

548

 

Interest cost

 

 

207

 

 

 

166

 

 

 

437

 

 

 

286

 

Amortization of prior service cost

 

 

393

 

 

 

436

 

 

 

830

 

 

 

678

 

Amortization of loss

 

 

4

 

 

 

 

 

 

7

 

 

 

 

Total net periodic benefit cost

 

$

954

 

 

$

921

 

 

$

1,982

 

 

$

1,512