Retirement Plan

3 Months Ended

Mar. 31, 2013

Retirement Plan

7. Retirement Plan

We have a noncontributory, unfunded retirement plan for certain officers and other key employees in the United States (Domestic Retirement Plan). In February 2012, our Board of Directors amended the Domestic Retirement Plan to freeze benefit levels and modify vesting provisions under the plan effective as of March 31, 2012.

The components of net periodic pension cost for the Domestic Retirement Plan, which are included in selling, general and administrative expenses, for the three months ended March 31, 2013 and 2012, are as follows:

Three months ended March 31,	2013		2012
Service cost	$	—	$	130
Interest cost		402		404
Recognized net actuarial loss		342		257
Curtailment loss		—		234
Net periodic pension cost	$	744	$	1,025

Certain of our foreign subsidiaries have defined benefit and health and welfare plans covering substantially all of their respective employees. Our expense for these plans totaled $0.3 million for the three months ended March 31, 2013.