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Components of Net Periodic Pension Cost (Tables)
6 Months Ended
Jun. 30, 2013
Components of Net Periodic Pension Cost [Abstract]  
Schedule of Net Periodic Pension Cost
 
 
Three Months Ended 
June 30,
 
Six Months Ended 
June 30,
 
 
 
2013
 
2012
 
2013
 
2012
 
 
 
(in thousands)
 
Interest cost
 
$
132
 
$
135
 
$
264
 
$
278
 
Net amortization and deferral
 
 
(54)
 
 
(12)
 
 
(56)
 
 
(42)
 
Net periodic pension cost
 
$
78
 
$
123
 
$
208
 
$
236