Employee Benefit Plans and Other Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2013

Pension Plans

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


	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
(In thousands)
Components of Net Pension Costs
Service cost for benefits earned during the year	$	6,249		$	5,606		$	12,497		$	11,212
Interest cost on accumulated benefit obligation		3,991			3,700			7,982			7,400
Expected return on assets		(3,751	)		(3,027	)		(7,501	)		(6,054	)
Net amortization of unrecognized amounts
Prior service cost		1,560			1,498			3,121			2,996
Curtailment loss		7,776			—			7,776			—
Actuarial loss		1,502			1,229			3,003			2,458

Net pension costs	$	17,327		$	9,006		$	26,878		$	18,012

Postretirement Plans

For the three- and six-month periods ended June 30, 2013 and 2012, net postretirement costs were comprised of the following:


	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
(In thousands)
Components of Net Postretirement Costs
Service cost for benefits earned during the year	$	515		$	464		$	1,030		$	928
Interest cost on accumulated benefit obligation		311			310			623			620
Net amortization of unrecognized amounts
Prior service cost		(106	)		(104	)		(212	)		(209	)
Actuarial loss		134			113			267			226

Net postretirement costs	$	854		$	783		$	1,708		$	1,565