Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2018

Retirement Benefits [Abstract]

Schedule of Employee Benefit Plans

The components of net period benefit cost for the three and nine months ended September 30, 2018 and 2017 are as follows:

	Three Months Ended September 30, 2018
	Retirement Income Plan			National Service-Related Pension Plan			Other Post-Retirement Benefits		Superannuation			Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	8		$	20		$	—	$	43		$	71
Interest cost	354			300			5		33			692
Expected return on plan assets	(512		)	(342		)	—		(35		)	(889		)
Amortization of net loss	311			179			—		124			614
Amortization of prior service cost	—			—			—		4			4
Net pension benefit cost	$	161		$	157		$	5	$	169		$	492

	Three Months Ended September 30, 2017
	Retirement Income Plan			National Service-Related Pension Plan			Other Post-Retirement Benefits		Superannuation			Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	16		$	126		$	—	$	60		$	202
Interest cost	231			314			6		31			582
Expected return on plan assets	(439		)	(294		)	—		(44		)	(777		)
Amortization of net loss	290			144			—		—			434
Amortization of prior service cost	—			53			—		—			53
Effect of settlement	265			59			—		—			324
Net pension benefit cost	$	363		$	402		$	6	$	47		$	818

	Nine Months Ended September 30, 2018
	Retirement Income Plan			National Service-Related Pension Plan			Other Post-Retirement Benefits		Superannuation			Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	23		$	59		$	—	$	173		$	255
Interest cost	1,063			899			15		86			2,063
Expected return on plan assets	(1,535		)	(1,027		)	—		(124		)	(2,686		)
Amortization of net loss	933			536			—		123			1,592
Amortization of prior service cost	—			—			—		23			23
Net pension benefit cost	$	484		$	467		$	15	$	281		$	1,247

	Nine Months Ended September 30, 2017
	Retirement Income Plan			National Service-Related Pension Plan			Other Post-Retirement Benefits		Superannuation			Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	49		$	378		$	—	$	176		$	603
Interest cost	1,022			942			17		90			2,071
Expected return on plan assets	(1,317		)	(881		)	—		(130		)	(2,328		)
Amortization of net loss	1,064			492			—		—			1,556
Amortization of prior service cost	—			159			—		—			159
Effect of settlement	540			178			—		—			718
Net pension benefit cost	$	1,358		$	1,268		$	17	$	136		$	2,779