Employee Benefit Plans (Tables)

9 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

Schedule of net benefit costs

The components of net periodic benefit cost for the plans were as follows:

	Three Months Ended June 30,				Nine Months Ended June 30,
	2021		2020		2021		2020
Service cost	$	287	$	259	$	858	$	779
Interest cost	81		67		240		203
Expected return on plan assets	(88)		(30)		(262)		(89)
Amortization of actuarial losses	266		235		640		706
Pension expense for defined benefit plans	$	546	$	531	$	1,476	$	1,599