POSTRETIREMENT MEDICAL BENEFITS AND PENSION (Tables)

9 Months Ended

Sep. 30, 2014

Postretirement Medical Benefits

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Components of net periodic benefit cost

The components of net periodic postretirement medical benefit cost are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
	(In thousands)				(In thousands)
Components of net periodic benefit cost:
Service cost	$	822	$	1,109	$	2,467	$	3,327
Interest cost	3,203		3,035		9,610		9,104
Amortization of deferred items	4		1,001		13		3,004
Total net periodic benefit cost	$	4,029	$	5,145	$	12,090	$	15,435

The following table shows the net periodic postretirement medical benefit costs that relate to current and former mining operations:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
	(In thousands)				(In thousands)
Former mining operations	$	2,402	$	3,119	$	7,210	$	9,356
Current operations	1,627		2,026		4,880		6,079
Total net periodic benefit cost	$	4,029	$	5,145	$	12,090	$	15,435

Pension

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Components of net periodic benefit cost

The Company incurred net periodic benefit costs of providing these pension benefits as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013
	(In thousands)						(In thousands)
Components of net periodic benefit cost:
Service cost	$	500		$	587		$	1,500		$	1,760
Interest cost	1,747			1,590			5,240			4,771
Expected return on plan assets	(2,154		)	(2,192		)	(6,461		)	(6,577		)
Amortization of deferred items	359			872			1,078			2,617
Total net periodic pension cost	$	452		$	857		$	1,357		$	2,571