Income Taxes (Reconciliation Of The Change In Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Balance at Beginning of Year	$ 5,085	$ 3,147	$ 2,001
Additions for Tax Positions of Prior Years	396	2,504	2,447
Reductions for Tax Positions of Prior Years	(1,314)	(566)	(1,301)
Reductions Related to Settlements with Taxing Authorities	(3,771)	0	0
Balance at End of Year	$ 396	$ 5,085	$ 3,147