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Defined Benefit Plans
 6 Months Ended
Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]  
Defined Benefit Plans
Defined Benefit Plans
The components of the combined net periodic expense (benefit) for the Corporation’s defined benefit pension plans were as follows:
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
2014
 
2013
 
2014
 
2013
Expected return on plan assets, net of expenses
$
(3,128
)
 
$
(2,772
)
 
$
(6,257
)
 
$
(5,544
)
Interest cost on projected benefit obligation
2,000

 
1,836

 
4,001

 
3,671

Net amortization and deferral
671

 
1,639

 
1,343

 
3,279

Net periodic expense (benefit)
$
(457
)
 
$
703

 
$
(913
)
 
$
1,406


The Corporation’s non-qualified defined benefit pension plan is not funded. No contributions to the qualified defined benefit pension plan were made during the six months ended June 30, 2014. The Corporation does not expect to make any contributions to the qualified defined benefit plan during the remainder of 2014.