Pension and Post-retirement Benefits (Tables)

9 Months Ended

Jun. 30, 2024

Pension and Post-retirement Benefits

Schedule of components of net periodic pension and postretirement benefit cost

	Three Months Ended June 30,								Nine Months Ended June 30,
	Pension Benefits				Other Benefits				Pension Benefits				Other Benefits
	2023		2024		2023		2024		2023		2024		2023		2024
Service cost	$	672	$	752	$	348	$	290	$	2,016	$	2,256	$	1,042	$	870
Interest cost		2,772		2,950		799		716		8,316		8,850		2,399		2,148
Expected return		(3,419)		(3,364)		—		—		(10,257)		(10,092)		—		—
Amortizations		52		51		(569)		(850)		154		153		(1,709)		(2,551)
Net periodic benefit cost	$	77	$	389	$	578	$	156	$	229	$	1,167	$	1,732	$	467