Pensions And Other Employee Benefits Plans

3 Months Ended

Mar. 31, 2012

Pensions And Other Employee Benefits Plans [Abstract]

Pensions And Other Employee Benefits Plans

15. Pensions and Other Employee Benefit Plans

The following table provides the components of net periodic cost for our qualified and supplemental retirement plans (the "Pension Benefits") and health care and life insurance benefits for retired employees and dependents (the "Other Benefits") for the three months ended March 31, 2012 and 2011 (in thousands):

	Pension Benefits Three  Months Ended March 31,						Other Benefits Three  Months Ended March 31,
	2012			2011			2012			2011
Service cost	$	3,639		$	3,048		$	152		$	181
Interest cost		6,366			6,327			763			837
Expected return on plan assets		(6,243	)		(5,813	)		—			(4	)
Amortization of net actuarial loss or (gain)		2,968			1,390			(94	)		(197	)
Amortization of prior service credits		(680	)		(679	)		(182	)		(182	)
Net periodic cost	$	6,050		$	4,273		$	639		$	635