Retirement Benefit Plans (Tables)

6 Months Ended

Mar. 31, 2018

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,
	2018			2017			2018			2017
Service cost	$	63		$	78		$	126		$	157
Interest cost	239			220			479			440
Expected return on plan assets	(401		)	(404		)	(803		)	(809		)
Amortization of net loss	161			214			323			429
Net periodic cost	$	62		$	108		$	125		$	217