Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2022

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

Pension and other postretirement benefits expenses consisted of the following:

	Three Months Ended June 30,				Six Months Ended June 30,
Pensions	2022		2021		2022		2021
Service cost	$	1,328	$	1,538	$	2,883	$	3,279
Interest cost	3,434		3,204		6,868		6,376
Expected return on plan assets	(7,257)		(6,962)		(14,538)		(13,934)
Amortization of prior service cost	99		80		207		165
Amortization of actuarial losses	3,518		4,080		6,657		8,006
Special termination benefits	—		—		136		—
Net periodic benefit cost	$	1,122	$	1,940	$	2,213	$	3,892

	Three Months Ended June 30,				Six Months Ended June 30,
Other Postretirement Benefits	2022		2021		2022		2021
Service cost	$	15	$	25	$	39	$	50
Interest cost	203		206		409		412
Amortization of prior service cost	9		8		18		15
Amortization of actuarial losses	(1)		70		(1)		140
Net periodic benefit cost	$	226	$	309	$	465	$	617