Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2022

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 March 31,						Three Months Ended March 31,
	2022			2021			2022		2021
Components of net periodic benefit cost:
Service cost	$	1,611		$	1,927		$	—	$	—
Interest cost		3,722			3,584			7		8
Expected return on plan assets		(7,142	)		(6,574	)		—		—
Amortization of actuarial loss		110			1,098			7		10
Net periodic benefit cost	$	(1,699	)	$	35		$	14	$	18

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 March 31,
	2022			2021
Components of net periodic benefit cost:
Interest cost		4			4
Amortization of actuarial gain		(98	)		(113	)
Net periodic benefit cost	$	(94	)	$	(109	)