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Components of Pension Plan Net Periodic Benefit Cost (Tables)
 6 Months Ended
Jun. 30, 2018
Retirement Benefits [Abstract]  
Components of Net Periodic Costs
Components of Net Periodic Benefit Cost are as follows:
 
For the Three Months Ended June 30,
 
For the Six Months Ended June 30,
 
2018
 
2017
 
2018
 
2017
Service Cost
$
96

 
$
149

 
$
193

 
$
193

Interest Cost
300

 
476

 
600

 
619

Amortization of Prior Service Credits
(90
)
 
(143
)
 
(181
)
 
(186
)
Recognized Net Actuarial Loss
373

 
604

 
746

 
786

Curtailment Gain
(416
)
 
—

 
(416
)
 
—

Net Periodic Benefit Cost
$
263

 
$
1,086

 
$
942

 
$
1,412