Employee Benefit Plans and Other Postretirement Plans (Tables)

9 Months Ended

Sep. 30, 2013

Pension Plans

For the three- and nine-month periods ended September 30, 2013 and 2012, net pension costs were comprised of the following:


	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
(In thousands)
Components of Net Pension Costs
Service cost for benefits earned during the year	$	5,825		$	5,606		$	18,322		$	16,818
Interest cost on accumulated benefit obligation		4,269			3,700			12,250			11,100
Expected return on assets		(3,796	)		(3,027	)		(11,297	)		(9,081	)
Net amortization of unrecognized amounts
Prior service cost		163			1,498			3,284			4,495
Curtailment loss		3,132			—			10,908			—
Actuarial loss		2,217			1,229			5,220			3,687

Net pension costs	$	11,810		$	9,006		$	38,687		$	27,019

Postretirement Plans

Components of Net Periodic Benefit Cost

For the three- and nine-month periods ended September 30, 2013 and 2012, net postretirement costs relating to certain medical benefits for retirees were comprised of the following:


	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
(In thousands)
Components of Net Postretirement Costs
Service cost for benefits earned during the year	$	515		$	464		$	1,545		$	1,392
Interest cost on accumulated benefit obligation		311			310			934			931
Net amortization of unrecognized amounts
Prior service cost		(106	)		(104	)		(319	)		(314	)
Actuarial loss		134			113			401			339

Net postretirement costs	$	854		$	783		$	2,561		$	2,348