Pension and postretirement benefits (Tables)

6 Months Ended

Jun. 30, 2012

Pension Plans, Defined Benefit [Member]

Schedule Of Net Benefit Costs Table Text Block

		Pension Plan				Benefit Restoration Plans
		Quarters ended June 30,				Quarters ended June 30,
(In thousands)		2012		2011		2012		2011
Interest cost	$	7,495	$	7,784	$	393	$	395
Expected return on plan assets		(9,810)		(10,840)		(526)		(450)
Amortization of net loss		5,426		2,829		323		148
Total net periodic pension cost (benefit)	$	3,111	$	(227)	$	190	$	93

		Pension Plans				Benefit Restoration Plans
		Six months ended June 30,				Six months ended June 30,
(In thousands)		2012		2011		2012		2011
Interest cost	$	14,990	$	15,569	$	786	$	790
Expected return on plan assets		(19,620)		(21,680)		(1,052)		(901)
Amortization of net loss		10,852		5,657		646		296
Total net periodic pension cost (benefit)	$	6,222	$	(454)	$	380	$	185

Other Postretirement Benefit Plans Defined Benefit [Member]

Schedule Of Net Benefit Costs Table Text Block

		Postretirement Benefit Plan
		Quarters ended June 30,				Six months ended June 30,
(In thousands)		2012		2011		2012		2011
Service cost	$	548	$	504	$	1,096	$	1,008
Interest cost		1,950		2,135		3,900		4,271
Amortization of prior service cost		(50)		(240)		(100)		(480)
Amortization of net loss		540		267		1,080		534
Total net periodic postretirement benefit cost	$	2,988	$	2,666	$	5,976	$	5,333