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Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2021

Defined Benefit Pension Plan [Member]

Net Periodic Benefit Cost For U.S. Employees

Pension Benefits	Three Months Ended						Six Months Ended
	June 30,						June 30,
(Dollars in thousands)	2021			2020			2021			2020
Service cost	$	2,738		$	2,041		$	5,476		$	6,052
Interest cost		1,999			2,563			3,998			5,046
Expected return on plan assets		(5,580)			(5,197)			(11,161)			(10,394)
Amortization of net (income) loss		2,731			2,462			5,461			3,675
Net periodic benefit cost	$	1,888		$	1,869		$	3,774		$	4,379

Post-Retirement Plan [Member]

Net Periodic Benefit Cost For U.S. Employees

Other Benefits	Three Months Ended						Six Months Ended
	June 30,						June 30,
(Dollars in thousands)	2021			2020			2021			2020
Service cost	$	281		$	311		$	564		$	452
Interest cost		181			215			362			429
Amortization of prior service cost		(144)			(176)			(289)			(224)
Net periodic benefit cost	$	318		$	350		$	637		$	657

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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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