Employee benefit plans (Tables)

9 Months Ended

Sep. 30, 2011

Employee benefit plans [Abstract]

Employee benefit plans Table

The Company has noncontributory defined benefit pension plans and other postretirement benefit plans for certain eligible employees. Components of net periodic benefit cost for the Company's pension and other postretirement benefit plans were as follows:

Three Months	Pension Benefits						Other Postretirement Benefits
Ended September 30,	2011			2010			2011			2010
	(In thousands)
Components of net periodic benefit cost:
Service cost	$	35		$	792		$	361		$	313
Interest cost		4,706			5,521			1,175			1,122
Expected return on assets		(5,679	)		(6,373	)		(1,263	)		(1,261	)
Amortization of prior service cost (credit)		(54	)		42			(669	)		(762	)
Amortization of net actuarial loss		917			745			430			195
Amortization of net transition obligation		-			-			532			490
Net periodic benefit cost, including amount capitalized		(75	)		727			566			97
Less amount capitalized		323			268			(41	)		(1	)
Net periodic benefit cost	$	(398	)	$	459		$	607		$	98

Nine Months	Pension Benefits						Other Postretirement Benefits
Ended September 30,	2011			2010			2011			2010
	(In thousands)
Components of net periodic benefit cost:
Service cost	$	1,689		$	2,097		$	1,083		$	1,044
Interest cost		14,625			14,451			3,525			3,716
Expected return on assets		(17,106	)		(17,057	)		(3,789	)		(4,230	)
Amortization of prior service cost (credit)		33			111			(2,007	)		(2,541	)
Amortization of net actuarial loss		3,509			1,973			688			650
Amortization of net transition obligation		-			-			1,594			1,635
Curtailment loss		1,218			-			-			-
Net periodic benefit cost, including amount capitalized		3,968			1,575			1,094			274
Less amount capitalized		858			651			(136	)		83
Net periodic benefit cost	$	3,110		$	924		$	1,230		$	191