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Retirement Plans (Tables)

9 Months Ended

Sep. 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 September 30,								Three Months Ended September 30,
		2021				2020				2021				2020
Components of net periodic benefit cost:
Service cost		$	1,991			$	1,917			$	—			$	—
Interest cost			3,560				3,919				8				10
Expected return on plan assets			(6,566	)			(5,960	)			—				—
Amortization of actuarial loss			1,412				994				10				8
Net periodic benefit cost		$	397			$	870			$	18			$	18


		Pension Benefits
		Pension Plans								SERP
		Nine Months Ended September 30,								Nine Months Ended September 30,
		2021				2020				2021				2020
Components of net periodic benefit cost:
Service cost		$	5,971			$	5,753			$	—			$	—
Interest cost			10,679				11,758				23				30
Expected return on plan assets			(19,699	)			(17,883	)			—				—
Amortization of actuarial loss			3,300				1,651				30				26
Net periodic benefit cost		$	251			$	1,279			$	53			$	56

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 September 30,								Nine Months Ended September 30,
		2021				2020				2021				2020
Components of net periodic benefit cost:
Service cost		$	—			$	—			$	—			$	—
Interest cost			5				6				13				17
Amortization of actuarial gain			(113	)			(131	)			(338	)			(392	)
Net periodic benefit cost		$	(108	)		$	(125	)		$	(325	)		$	(375	)