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 June 30,	2013			2012			2013			2012
	(In thousands)
Components of net periodic benefit cost:
Service cost	$	37		$	350		$	334		$	461
Interest cost	4,106			4,262			667			1,038
Expected return on assets	(4,875		)	(5,845		)	(1,065		)	(1,201		)
Amortization of prior service cost (credit)	18			(21		)	(364		)	(272		)
Amortization of net actuarial loss	1,716			2,102			407			887
Amortization of net transition obligation	—			—			—			531
Net periodic benefit cost, including amount capitalized	1,002			848			(21		)	1,444
Less amount capitalized	158			196			61			183
Net periodic benefit cost (credit)	$	844		$	652		$	(82	)	$	1,261

							Other
							Postretirement
	Pension Benefits						Benefits
Six Months Ended June 30,	2013			2012			2013			2012
	(In thousands)
Components of net periodic benefit cost:
Service cost	$	77		$	695		$	838		$	873
Interest cost	8,124			8,816			1,607			2,181
Expected return on assets	(9,958		)	(11,731		)	(2,172		)	(2,445		)
Amortization of prior service cost (credit)	36			(42		)	(728		)	(544		)
Amortization of net actuarial loss	3,580			3,783			1,078			1,413
Amortization of net transition obligation	—			—			—			1,063
Net periodic benefit cost, including amount capitalized	1,859			1,521			623			2,541
Less amount capitalized	268			430			90			321
Net periodic benefit cost	$	1,591		$	1,091		$	533		$	2,220

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 six months ended June 30, 2013, was $1.8 million and $3.6 million, respectively. The company's net periodic benefit cost for this plan for the three and six months ended June 30, 2012, was $2.0 million and $4.1 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.