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Pension Plans
 6 Months Ended
Jun. 30, 2013
Pension Plans [Abstract]  
Pension Plans
NOTE H – Pension Plans

We have a defined benefit pension plan covering substantially all employees hired on or before December 31, 2005. The pension plan was closed to any employee hired after that date. The benefits are based on years of service and the employee’s final average compensation. Effective January 1, 2007, no new benefits are earned under this plan for additional years of service after December 31, 2006.

We also have a non-qualified, non-contributory supplemental executive retirement plan (SERP) for employees whose retirement benefits are reduced due to their annual compensation levels. The SERP limits the total amount of annual retirement benefits that may be paid to a participant in the SERP from all sources (Retirement Plan, Social Security and the SERP) to $125,000. The SERP is not funded so we pay benefits directly to participants.

Net pension costs included the following components (in thousands):

Three Months Ended
June 30,
Six Months Ended
June 30,
2013
2012
2013
2012
Service cost-benefits earned during period
$27$31$54$62
Interest cost on projected benefit obligations
8779431,7541,886
Expected return on plan assets
(1,243 )(1,118 )(2,486 )(2,236 )
Amortization of prior service costs
5252104104
Amortization of actuarial loss
428490856980
Net pension costs
$141$398$282$796