Pension & Postretirement Expenses (Tables)

6 Months Ended

Mar. 31, 2020

Defined Benefit Plan [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,
		2019		2020		2019		2020
Service cost		$	18	22		$	36	44
Interest cost		50		40		100		80
Expected return on plan assets		(88)		(84)		(176)		(168)
Net amortization		16		38		33		75
Total		$	(4)	16		$	(7)	31