Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2019

Retirement Benefits [Abstract]

Schedule of Employee Benefit Plans

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

	Three Months Ended June 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	$	—		$	—		$	—		$	18		$	18
Interest cost	397			311			6			13			727
Expected return on plan assets	(440		)	(294		)	—			(19		)	(753		)
Amortization of net loss	377			141			(1		)	—			517
Amortization of prior service cost	—			—			—			9			9
Net pension benefit cost	$	334		$	158		$	5		$	21		$	518

	Three Months Ended June 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		$	—	$	73		$	101
Interest cost	354			300			5		26			685
Expected return on plan assets	(512		)	(342		)	—		(44		)	(898		)
Amortization of net loss	312			179			—		—			491
Amortization of prior service cost	—			—			—		7			7
Net pension benefit cost	$	162		$	157		$	5	$	62		$	386

	Six Months Ended June 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	$	—		$	—		$	—		$	34		$	34
Interest cost	795			622			12			25			1,454
Expected return on plan assets	(880		)	(588		)	—			(37		)	(1,505		)
Amortization of net loss	754			282			(2		)	—			1,034
Amortization of prior service cost	—			—			—			17			17
Net pension benefit cost	$	669		$	316		$	10		$	39		$	1,034

	Six Months Ended June 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	$	15		$	39		$	—	$	131		$	185
Interest cost	709			600			10		53			1,372
Expected return on plan assets	(1,024		)	(685		)	—		(89		)	(1,798		)
Amortization of net loss	623			357			—		—			980
Amortization of prior service cost	—			—			—		18			18
Net pension benefit cost	$	323		$	311		$	10	$	113		$	757