Retirement Plan And Other Post-Retirement Benefits (Tables)

3 Months Ended

Dec. 31, 2024

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost (Income)

Components of Net Periodic Benefit Cost (in thousands):

	Retirement Plan				Other Post-Retirement Benefits
Three Months Ended December 31,	2024		2023		2024		2023
Service Cost	$	1,023	$	1,049	$	130	$	109
Interest Cost	9,223		10,890		3,625		3,890
Expected Return on Plan Assets	(14,647)		(17,086)		(6,536)		(6,660)
Amortization of Prior Service Cost (Credit)	76		91		(107)		(107)
Amortization of (Gains) Losses	1,620		(335)		9		(567)
Net Amortization and Deferral for Regulatory Purposes (Including Volumetric Adjustments) (1)	(165)		4,057		(727)		2,238
Net Periodic Benefit Cost (Income)	$	(2,870)	$	(1,334)	$	(3,606)	$	(1,097)

(1)The Company’s policy is to record retirement plan and other post-retirement benefit costs in the Utility segment on a volumetric basis to reflect the fact that the Utility segment experiences higher throughput of natural gas in the winter months and lower throughput of natural gas in the summer months.