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Employee Benefit Plans And Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2012

Net Pension Costs [Member]

Defined Benefit Plan Disclosure [Line Items]

Components Of Net Periodic Benefit Cost


		Three Months Ended March 31,
		2012				2011
(In thousands)
Components of Net Pension Costs
Service cost for benefits earned during the year		$	5,606			$	4,952
Interest cost on accumulated benefit obligation			3,700				3,368
Expected return on assets			(3,027	)			(3,385	)
Net amortization of unrecognized amounts
Prior service cost			1,498				1,445
Actuarial loss			1,229				103

Net pension costs		$	9,006			$	6,483

Net Postretirement Costs [Member]

Defined Benefit Plan Disclosure [Line Items]

Components Of Net Periodic Benefit Cost


		Three Months Ended March 31,
		2012				2011
(In thousands)
Components of Net Postretirement Costs
Service cost for benefits earned during the year		$	464			$	400
Interest cost on accumulated benefit obligation			310				297
Net amortization of unrecognized amounts
Prior service cost			(104	)			(104	)
Actuarial loss			113				112

Net postretirement costs		$	783			$	705