Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2019

Retirement Benefits [Abstract]

Schedule of Employee Benefit Plans

The components of net period benefit cost for the three and nine months ended September 30, 2019 and 2018 are as follows:

	Three Months Ended September 30, 2019
	Retirement Income Plan			National Service-Related Pension Plan			Other Post-Retirement Benefits			Superannuation			Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	—		$	—		$	—		$	17		$	17
Interest cost	397			312			5			12			726
Expected return on plan assets	(440		)	(294		)	—			(17		)	(751		)
Amortization of net loss	377			141			(1		)	—			517
Amortization of prior service cost	—			—			—			8			8
Net pension benefit cost	$	334		$	159		$	4		$	20		$	517

	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

	Nine Months Ended September 30, 2019
	Retirement Income Plan			National Service-Related Pension Plan			Other Post-Retirement Benefits			Superannuation			Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	—		$	—		$	—		$	52		$	52
Interest cost	1,192			934			17			37			2,180
Expected return on plan assets	(1,320		)	(882		)	—			(55		)	(2,257		)
Amortization of net loss	1,132			422			(3		)	—			1,551
Amortization of prior service cost	—			—			—			25			25
Net pension benefit cost	$	1,004		$	474		$	14		$	59		$	1,551

	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