Pension & Postretirement Expenses (Tables)

6 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Schedule of Pension and Postretirement Plan Expenses

Total periodic pension and postretirement (income) expense is summarized below:

	Three Months Ended March 31,				Six Months Ended March 31,
		2020		2021		2020	2021
Service cost		$	22	21		44	42
Interest cost		40		32		80	64
Expected return on plan assets		(84)		(84)		(168)	(168)
Net amortization		38		35		75	70
Total		$	16	4		31	8