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Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2013
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Periodic Benefit (Credit) Cost
The following table provides the components of the Company’s net periodic pension (credit) for the three months ended March 31, 2013 and 2012, respectively.
 
Defined Benefit Pension Plans
 
Three Months Ended March 31,
 
2013
2012
Interest cost
$
2,200

$
2,800

Expected return on plan assets
(3,175
)
(3,612
)
Amortization of net loss
620

259

Net periodic pension (credit)
$
(355
)
$
(553
)