PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2014

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS

Summary of the components of net periodic benefit cost

	Three Months Ended March 31
	Nonunion Defined						Supplemental				Postretirement
	Benefit Pension Plan						Benefit Plan				Health Benefit Plan
	2014			2013			2014		2013		2014			2013
	(in thousands)
Service cost	$	—		$	2,367		$	—	$	—	$	70		$	83
Interest cost	1,720			1,923			49		37		197			188
Expected return on plan assets	(2,831		)	(3,154		)	—		—		—			—
Amortization of prior service credit	—			—			—		—		(47		)	(48		)
Pension settlement expense	3,691			—			—		—		—			—
Amortization of net actuarial loss	498			2,713			56		65		23			134
Net periodic benefit cost	$	3,078		$	3,849		$	105	$	102	$	243		$	357

Schedule of changes in the PBO and plan assets of the nonunion defined benefit pension plan

	Nonunion Defined
	Benefit Pension Plan
	(in thousands)
Change in projected benefit obligation
Projected benefit obligation at December 31, 2013	$	211,660
Interest cost	1,720
Actuarial loss (1)	8,329
Benefits paid(2)	(39,878		)
Projected benefit obligation at March 31, 2014	181,831
Change in plan assets
Fair value of plan assets at December 31, 2013	207,613
Actual return on plan assets	2,492
Benefits paid(2)	(39,878		)
Fair value of plan assets at March 31, 2014	170,227
Funded status at March 31, 2014(3)	$	(11,604	)
Accumulated benefit obligation	$	181,831

(1) Net actuarial loss from remeasurement upon settlements was primarily impacted by changes in the discount rate since the previous remeasurement date. The discount rate used to remeasure the PBO upon settlement was 3.5% compared to a rate of 3.8% as of the December 31, 2013 measurement date.

(2) Includes purchase of nonparticipating annuity contract, lump-sum distributions, and periodic payments made by the plan during the three months ended March 31, 2014.

(3) Noncurrent liability recognized within pension and postretirement liabilities in the accompanying consolidated balance sheet at March 31, 2014.