Employee benefit plans

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:



							Other
							Postretirement
	Pension Benefits						Benefits
Three Months Ended September 30,	2013			2012			2013			2012
	(In thousands)
Components of net periodic benefit cost:
Service cost	$	39		$	349		$	419		$	437
Interest cost	4,062			4,407			804			943
Expected return on assets	(4,979		)	(5,865		)	(1,086		)	(1,222		)
Amortization of prior service cost (credit)	18			(22		)	(364		)	(534		)
Amortization of net actuarial loss	1,793			1,887			327			356
Amortization of net transition obligation	—			—			—			531
Curtailment gain	—			(1,023		)	—			—
Net periodic benefit cost, including amount capitalized	933			(267		)	100			511
Less amount capitalized	157			185			47			314
Net periodic benefit cost (credit)	$	776		$	(452	)	$	53		$	197



							Other
							Postretirement
	Pension Benefits						Benefits
Nine Months Ended September 30,	2013			2012			2013			2012
	(In thousands)
Components of net periodic benefit cost:
Service cost	$	116		$	1,044		$	1,257		$	1,310
Interest cost	12,186			13,223			2,411			3,124
Expected return on assets	(14,937		)	(17,596		)	(3,258		)	(3,667		)
Amortization of prior service cost (credit)	54			(64		)	(1,092		)	(1,078		)
Amortization of net actuarial loss	5,373			5,670			1,405			1,769
Amortization of net transition obligation	—			—			—			1,594
Curtailment gain	—			(1,023		)	—			—
Net periodic benefit cost, including amount capitalized	2,792			1,254			723			3,052
Less amount capitalized	425			615			137			635
Net periodic benefit cost	$	2,367		$	639		$	586		$	2,417

In 2010, all benefit and service accruals for nonunion and certain union plans were frozen. In 2011 and effective September 30, 2012, all benefit and service accruals for certain additional union employees were frozen. These employees are eligible to receive additional defined contribution plan benefits.

In addition to the qualified plan defined pension benefits reflected in the table, the Company has unfunded, nonqualified benefit plans for executive officers and certain key management employees that generally provide for defined benefit payments at age 65 following the employee's retirement or to their beneficiaries upon death for a 15-year period. The Company's net periodic benefit cost for this plan for the three and nine months ended September 30, 2013, was $1.8 million and $5.5 million, respectively. The Company's net periodic benefit cost for this plan for the three and nine months ended September 30, 2012, was $2.0 million and $6.1 million, respectively.

In 2012, the Company modified health care coverage for certain retirees. Effective January 1, 2013, post-65 coverage is replaced by a fixed-dollar subsidy for certain retirees and spouses to be used to purchase individual insurance through an exchange.