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Employee benefit plans (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Schedule of net benefit costs

Components of net periodic benefit cost (credit) for the Company's pension and other postretirement benefit plans were as follows:

			Pension Benefits						Other Postretirement Benefits
Three Months Ended March 31,			2021			2020			2021			2020
			(In thousands)
Components of net periodic benefit cost (credit):
Service cost			$	—		$	—		$	400		$	352
Interest cost			2,455			2,973			466			591
Expected return on assets			(4,894)			(4,761)			(1,275)			(1,248)
Amortization of prior service credit			—			—			(349)			(297)
Amortization of net actuarial loss			2,004			1,863			6			2
Net periodic benefit cost (credit), including amount capitalized			(435)			75			(752)			(600)
Less amount capitalized			—			—			39			32
Net periodic benefit cost (credit)			$	(435)		$	75		$	(791)		$	(632)

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- References

No definition available.

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ 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
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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