Pension and Postretirement Benefits Other Than Pension Plans (Tables)

9 Months Ended

Sep. 30, 2017

Pension Plan [Member]

Net Periodic Pension and Postretirement Benefit (Income) Expense

Net periodic pension expense reflected in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
Interest cost	$	891		$	966		$	2,706		$	2,896
Expected return on plan assets		(1,051	)		(1,021	)		(3,098	)		(3,061	)
Amortization of net actuarial loss		282			307			861			921
Net settlement loss		1,218			1,567			1,218			1,567
Total net periodic pension expense	$	1,340		$	1,819		$	1,687		$	2,323

Other Postretirement Benefit Plan [Member]

Net Periodic Pension and Postretirement Benefit (Income) Expense

Net postretirement benefit income reflected in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
Interest cost	$	27		$	30		$	81		$	90
Amortization of net actuarial loss		61			60			184			181
Amortization of prior service credit		(328	)		(328	)		(985	)		(985	)
Total net postretirement benefit income	$	(240	)	$	(238	)	$	(720	)	$	(714	)