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Benefit Plans (Tables)
3 Months Ended
Mar. 31, 2013
Compensation and Retirement Disclosure [Abstract]  
Components of Company Plan Benefit Expense
The following table summarizes key information related to the Company’s pension plans and retirement agreements (in thousands):  
 
Three months ended March 31, 2013
 
Fiscal Year Ended December 31, 2012
Change in Projected Benefit Obligation
 
 
 
Projected benefit obligation, beginning of period
$
19,761

 
$
16,879

Service cost
231

 
774

Interest cost
207

 
787

Plan amendments

 
569

Actuarial loss

 
945

Benefits paid
(78
)
 
(193
)
Projected benefit obligation, end of period
$
20,121

 
$
19,761

Change in Plan Assets
 
 
 
Plan assets at fair value, beginning of period
$

 
$

Company contributions
78

 
193

Benefits paid
(78
)
 
(193
)
Plan assets at fair value, end of period
$

 
$

Unfunded Status of the Plan
$
(20,121
)
 
$
(19,761
)
Components of Net Periodic Benefit Cost
 
Three Months Ended
 
March 31, 2013
 
April 1, 2012
Components of Net Periodic Benefit Cost
 
 
 
Service cost
$
231

 
$
193

Interest cost
207

 
197

Net loss
66

 
48

Net periodic pension cost
$
504

 
$
438