Employee Benefit Plans (Tables)

6 Months Ended

Jun. 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						Six months ended
		June 30,						June 30,
		2017			2018			2017			2018
	(In thousands)
Interest cost		$	506		$	372		$	1,012		$	744
Expected return on plan assets			(689	)		(590	)		(1,378	)		(1,180	)
Recognized actuarial losses			394			365			788			730
Total		$	211		$	147		$	422		$	294

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						Six months ended
		June 30,						June 30,
		2017			2018			2017			2018
	(In thousands)
Interest cost		$	20		$	15		$	40		$	30
Recognized actuarial gains			(54	)		(63	)		(108	)		(126	)
Total		$	(34	)	$	(48	)	$	(68	)	$	(96	)