Pension Plan and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The following table includes the components of net periodic benefit cost of our defined benefit pension plans and other postretirement benefits for the three months ended March 31, 2022 and 2021:

	Pension Benefits (Pension Plan)				Pension Benefits (ESSRP)				Postretirement Benefits
(in thousands)	2022		2021		2022		2021		2022		2021
Service Cost	$	1,644	$	1,866	$	49	$	47	$	335	$	430
Interest Cost	3,086		2,915		335		307		510		473
Expected Return on Assets	(5,921)		(5,590)		—		—		—		—
Amortization of Prior Service Cost	—		—		—		—		(1,433)		(1,433)
Amortization of Net Actuarial Loss	1,966		2,728		142		155		766		943
Net Periodic Benefit Cost	$	775	$	1,919	$	526	$	509	$	178	$	413

The following table includes the impact of regulation on the recognition of periodic benefit cost arising from pension and other postretirement benefits for the three months ended March 31, 2022 and 2021:

(in thousands)	2022		2021
Net Periodic Benefit Cost	$	1,479	$	2,841
Net Amount Amortized (Deferred) Due to the Effect of Regulation	527		(115)
Net Periodic Benefit Cost Recognized	$	2,006	$	2,726