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Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2021

Defined Benefit Plan Disclosure [Line Items]

Net Periodic Benefit Cost

The components of net periodic benefit cost for the Company’s defined benefit plans were as follows (in thousands):

		Pension Benefits
		Pension Plans								SERP
		Three months ended June 30,								Three months ended June 30,
		2021				2020				2021				2020
Components of net periodic benefit cost:
Service cost		$	2,053			$	1,919			$	—			$	—
Interest cost			3,535				3,949				7				10
Expected return on plan assets			(6,559	)			(5,735	)			—				—
Amortization of actuarial loss			790				425				10				9
Net periodic benefit cost		$	(181	)		$	558			$	17			$	19

		Pension Benefits
		Pension Plans								SERP
		Six months ended June 30,								Six months ended June 30,
		2021				2020				2021				2020
Components of net periodic benefit cost:
Service cost		$	3,980			$	3,836			$	—			$	—
Interest cost			7,119				7,839				15				20
Expected return on plan assets			(13,133	)			(11,923	)			—				—
Amortization of actuarial loss			1,888				657				20				18
Net periodic benefit cost		$	(146	)		$	409			$	35			$	38

Other Postretirement Benefits [Member]

Defined Benefit Plan Disclosure [Line Items]

Net Periodic Benefit Cost

The components of net periodic benefit cost for the Company’s postretirement benefit plan were as follows (in thousands):

		Other Postretirement Benefits
		Postretirement Welfare Plan
		Three months ended June 30,								Six months ended June 30,
		2021				2020				2021				2020
Components of net periodic benefit cost:
Service cost		$	—			$	—			$	—			$	—
Interest cost			4				5				8				11
Amortization of actuarial gain			(112	)			(130	)			(225	)			(261	)
Net periodic benefit cost		$	(108	)		$	(125	)		$	(217	)		$	(250	)

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ 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 http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2439-114920

Reference 3: 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

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2410-114920

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920

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