Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Schedule of Employee Benefit Plans

The components of net period benefit cost for the three and nine months ended September 30, 2021 and 2020, respectively, are as follows:

	Three Months Ended September 30, 2021
	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	$	15
Interest cost	236		234		2		5		477
Expected return on plan assets	(596)		(428)		—		(18)		(1,042)
Amortization of net loss	219		163		—		—		382
Amortization of prior service cost	—		—		—		7		7
Net pension benefit cost	$	(141)	$	(31)	$	2	$	9	$	(161)

	Three Months Ended September 30, 2020
	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	315		279		4		8		606
Expected return on plan assets	(500)		(366)		—		(20)		(886)
Amortization of net loss	255		152		—		—		407
Amortization of prior service cost	—		—		—		7		7
Net pension benefit cost	$	70	$	65	$	4	$	13	$	152

	Nine Months Ended September 30, 2021
	Retirement Income Plan		National Service-Related Pension Plan		Other Post-Retirement Benefits		Superannuation		Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	—	$	—	$	—	$	47	$	47
Interest cost	710		702		6		15		1,433
Expected return on plan assets	(1,788)		(1,282)		—		(56)		(3,126)
Amortization of net loss	655		489		—		—		1,144
Amortization of prior service cost	—		—		—		22		22
Net pension benefit cost	$	(423)	$	(91)	$	6	$	28	$	(480)

	Nine Months Ended September 30, 2020
	Retirement Income Plan		National Service-Related Pension Plan		Other Post-Retirement Benefits		Superannuation		Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	—	$	—	$	—	$	46	$	46
Interest cost	946		838		11		20		1,815
Expected return on plan assets	(1,501)		(1,099)		—		(51)		(2,651)
Amortization of net loss	763		455		—		—		1,218
Amortization of prior service cost	—		—		—		22		22
Net pension benefit cost	$	208	$	194	$	11	$	37	$	450