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Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2021

Defined Benefit Pension Plan [Member]

Net Periodic Benefit Cost For U.S. Employees

Pension Benefits	Three Months Ended
	March 31,
(Dollars in thousands)	2021			2020
Service cost	$	2,738		$	4,011
Interest cost		1,999			2,483
Expected return on plan assets		(5,580)			(5,197)
Amortization of net (income) loss		2,730			1,213
Net periodic benefit cost	$	1,887		$	2,510

Post-Retirement Plan [Member]

Net Periodic Benefit Cost For U.S. Employees

Other Benefits	Three Months Ended
	March 31,
(Dollars in thousands)	2021			2020
Service cost	$	281		$	141
Interest cost		181			215
Amortization of prior service cost		(144)			(48)
Net periodic benefit cost	$	318		$	308

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- Definition

Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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