Retirement Benefit Plans (Tables)

6 Months Ended

Mar. 31, 2020

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Cost

The components of net periodic benefit cost of the Company’s defined benefit plans are as follows:

	Three Months Ended   March 31,						Six Months Ended   March 31,
	2020			2019			2020			2019
Service cost	$	85		$	75		$	170		$	149
Interest cost	208			264			416			528
Expected return on plan assets	(363		)	(393		)	(727		)	(787		)
Amortization of net loss	188			107			376			215
Net periodic cost	$	118		$	53		$	235		$	105