Employee Benefit Plans (Tables)

9 Months Ended

Jun. 30, 2020

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,
	2020			2019			2020			2019
Service cost	$	259		$	214		$	779		$	648
Interest cost	67			118			203			357
Expected return on plan assets	(30		)	(30		)	(89		)	(90		)
Amortization of actuarial losses	235			95			706			288
Pension expense for defined benefit plans	$	531		$	397		$	1,599		$	1,203