Employee Benefit Plans (Tables)

6 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Schedule of net benefit costs

for the plans were as follows:

	Three Months Ended March 31,						Six Months Ended March 31,
	2019			2018			2019			2018
Service cost	$	217		$	243		$	434		$	475
Interest cost	120			123			239			241
Expected return on plan assets	(30		)	(32		)	(60		)	(63		)
Amortization of actuarial losses	97			79			193			155
Pension expense for defined benefit plans	$	404		$	413		$	806		$	808