Retirement Plans

9 Months Ended

Sep. 30, 2011

Retirement Plans [Abstract]

Retirement Plans

6. Retirement Plans

The following table provides the components of net periodic benefit cost for our pension plans for the three-month and nine-month periods ended September 30, 2011 and 2010, respectively (in thousands):

		0000000000		0000000000		0000000000		0000000000
	Three Months  Ended September 30,				Nine Months  Ended September 30,
	2011		2010		2011		2010
Service cost	$	568	$	723	$	2,701	$	2,489
Interest cost		996		980		2,502		2,260
Expected return on plan assets		(780)		(738)		(2,014)		(1,693)
Loss amortization		496		256		805		753
Net periodic benefit cost	$	1,280	$	1,221	$	3,994	$	3,809

During the nine-month period ended September 30, 2011, we contributed $2.2 million to our pension plans. During the remainder of the fiscal year ending December 31, 2011, we expect to contribute an additional $1.0 million to our pension plans.