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Employee Benefit Plans
6 Months Ended
Jun. 30, 2012
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
Employee Benefit Plans
Employee Benefit Plans
We sponsor a noncontributory qualified retirement plan and a separate and independent nonqualified supplemental retirement plan for certain employees. The components of net periodic benefit cost for both plans are as follows (in thousands):
 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
  
2012
 
2011
 
2012
 
2011
Service cost
$
491

 
$
789

 
$
1,389

 
$
1,931

Interest cost
969

 
724

 
2,067

 
1,890

Expected return on plan assets
(667
)
 
(405
)
 
(1,769
)
 
(1,225
)
Prior service cost
(35
)
 
(21
)
 
(93
)
 
(70
)
Recognized loss
467

 
151

 
856

 
462

Total
$
1,225

 
$
1,238

 
$
2,450

 
$
2,988


For the six months ended June 30, 2012 and 2011, we contributed $2.5 million and $2.2 million, respectively, to the qualified retirement plan. Currently, we do not anticipate making any additional contributions to this plan during 2012.