Employee Benefit Plans And Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2011

Net Pension Costs [Member]

Defined Benefit Plan Net Periodic Benefit Costs

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
(In thousands)
Components of Net Pension Costs
Service cost for benefits earned during the year	$	4,952		$	4,579		$	9,904		$	9,158
Interest cost on accumulated benefit obligation		3,368			3,023			6,736			6,045
Expected return on assets		(3,386	)		(2,802	)		(6,772	)		(5,604	)
Net amortization of unrecognized amounts		1,549			1,483			3,097			2,966
Net pension costs	$	6,483		$	6,283		$	12,965		$	12,565

Net Postretirement Costs [Member]

Defined Benefit Plan Net Periodic Benefit Costs

	Three Months Ended June 30,					Six Months Ended June 30,
	2011		2010			2011		2010
(In thousands)
Components of Net Postretirement Costs
Service cost for benefits earned during the year	$	400	$	350		$	800	$	700
Interest cost on accumulated benefit obligation		297		283			595		565
Net amortization of unrecognized amounts		8		(19	)		16		(37	)
Net postretirement costs	$	705	$	614		$	1,411	$	1,228