Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2018

Defined Benefit Pension Plans

Components of Net Periodic Defined Benefit Cost (Income)

The components of net periodic defined benefit pension cost are presented in the table below.

	Three months ended						Nine months ended
	September 30,						September 30,
	2017			2018			2017			2018
	(In thousands)
Interest cost	$	506		$	372		$	1,518		$	1,116
Expected return on plan assets		(689	)		(590	)		(2,067	)		(1,770	)
Recognized actuarial losses		394			365			1,182			1,095
Total	$	211		$	147		$	633		$	441

OPEB

Components of Net Periodic Defined Benefit Cost (Income)

The components of net periodic postretirement benefits other than pension (OPEB) income are presented in the table below.  

	Three months ended						Nine months ended
	September 30,						September 30,
	2017			2018			2017			2018
	(In thousands)
Interest cost	$	20		$	15		$	60		$	45
Recognized actuarial gains		(54	)		(63	)		(162	)		(189	)
Total	$	(34	)	$	(48	)	$	(102	)	$	(144	)