Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2011

Employee Benefit Plans [Abstract]

Pension Benefit Costs

	Three Months Ended September 30						Nine Months Ended September 30
	2011			2010			2011			2010
	(In thousands)						(In thousands)
Service cost	$	4,122		$	3,967		$	12,367		$	11,902
Interest cost		4,063			3,955			12,190			11,866
Expected return on plan assets		(5,453	)		(4,848	)		(16,359	)		(14,544	)
Amortization of prior service cost (credit)		(47	)		44			(142	)		130
Amortization of other actuarial losses		2,187			1,782			6,561			5,348
Net benefit cost	$	4,872		$	4,900		$	14,617		$	14,702

Other Postretirement Benefit Costs

	Three Months Ended September 30						Nine Months Ended September 30
	2011			2010			2011			2010
	(In thousands)						(In thousands)
Service cost	$	1,493		$	378		$	2,416		$	1,132
Interest cost		1,125			520			2,152			1,562
Amortization of prior service credits		(636	)		(591	)		(1,773	)		(1,773	)
Amortization of other actuarial gains		(775	)		(729	)		(2,325	)		(2,188	)
Net benefit cost (credit)	$	1,207		$	(422	)	$	470		$	(1,267	)