Pension Plans (Components Of Net Periodic Pension Cost) (Details) - Pension Plan [Member] - Foreign Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Interest cost of projected benefit obligation	$ 1,260	$ 815	$ 1,374
Service cost	1,535	1,696	1,599
Expected return on plan assets	(4,180)	(3,327)	(3,305)
Amortization of prior service cost	(5)	(5)	(5)
Recognized actuarial loss (gain)	2,293	3,385	2,292
Settlement loss	9	0	0
Net periodic pension cost	$ 912	$ 2,564	$ 1,955