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Retirement plans (Tables)

6 Months Ended

Jun. 30, 2022

Retirement Benefits [Abstract]

Schedule of Benefit Costs (Income)

Pension costs (income), which primarily include costs for the qualified TRP and the non-qualified SERP, are presented in the following table (in thousands):

			Quarter ended June 30,												Six months ended June 30,
			2022						2021						2022						2021
Service cost-benefits earned during the period			$	—					$	1					$	—					$	1
Interest cost on benefit obligation			4,241						3,988						8,541						7,938
Expected return on plan assets			(4,851)						(8,690)						(9,751)						(17,340)
Amortization of prior service cost			(117)						20						(242)						45
Amortization of actuarial loss			1,202						1,246						2,302						2,446
Expense (income) from company-sponsored retirement plans			$	475					$	(3,435)					$	850					$	(6,910)

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- References

No definition available.

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- Definition

Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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