Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2011

Pension and Other Postretirement Benefits [Abstract]

Net periodic cost for pension and other postretirement benefits

	Quarter Ended
							Other
							Postretirement
	Pension Benefits						Benefits
	June 30,			June 30,			June 30,			June 30,
	2011			2010			2011			2010
(In thousands)
Service cost	$	1,027		$	2,389		$	3		$	—
Interest cost		7,358			7,213			193			204
Expected return on plan assets		(8,627	)		(8,186	)		—			—
Plan net loss (gain)		1,615			3,309			(4	)		(136	)
Prior service cost (gain)		175			282			(63	)		(63	)
Transition obligation (asset)		(5	)		(4	)		191			191
Curtailment/settlement loss (gain)		995			1,014			—			—
Net periodic benefit cost	$	2,538		$	6,017		$	320		$	196

	Six Months Ended
							Other
							Postretirement
	Pension Benefits						Benefits
	June 30,			June 30,			June 30,			June 30,
	2011			2010			2011			2010
(In thousands)
Service cost	$	2,066		$	5,277		$	3		$	2
Interest cost		14,702			14,430			396			459
Expected return on plan assets		(17,151	)		(16,394	)		—			—
Plan net loss (gain)		3,211			6,154			54			(62	)
Prior service cost (gain)		458			564			(126	)		(126	)
Transition obligation (asset)		(10	)		(8	)		383			383
Curtailment/settlement loss (gain)		995			1,213			—			—
Net periodic benefit cost	$	4,271		$	11,236		$	710		$	656