Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Benefit Plans [Abstract]

Components of net periodic benefit cost

The following table provides the components of net periodic benefit cost for the pension, supplemental executive retirement and other postretirement benefit plans:

	Three Months Ended September 30,
	Pension and Supplemental						Other Postretirement
	Executive Retirement Plans						Benefits
	2012			2011			2012			2011
	(In thousands)
Service cost	$	2,416		$	2,229		$	307		$	273
Interest cost		4,120			4,025			286			338
Expected return on plan assets		(4,553	)		(4,343	)		(791	)		(824	)
Recognized net actuarial loss		1,457			1,002			199			157
Amortization of prior service cost		166			165			(1,554	)		(1,554	)
Net periodic benefit cost	$	3,606		$	3,078		$	(1,553	)	$	(1,610	)

	Nine Months Ended September 30,
	Pension and Supplemental						Other Postretirement
	Executive Retirement Plans						Benefits
	2012			2011			2012			2011
	(In thousands)
Service cost	$	7,247		$	6,688		$	920		$	818
Interest cost		12,361			12,074			857			1,013
Expected return on plan assets		(13,659	)		(13,030	)		(2,372	)		(2,474	)
Recognized net actuarial loss		4,372			3,008			599			473
Amortization of prior service cost		499			496			(4,663	)		(4,663	)
Net periodic benefit cost	$	10,820		$	9,236		$	(4,659	)	$	(4,833	)