Income Taxes (Schedule Of Components Of Deferred Income Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Income Taxes [Abstract]
Gross assets, current	$ 7,053	$ 6,801
Gross liabilities, current	(2,455)	(3,221)
Net current deferred income tax asset	4,598	3,580
Gross assets, noncurrent	2,422	2,133
Gross liabilities, noncurrent		(114)
Net noncurrent deferred income tax asset	2,422	2,019
Net deferred income tax asset	$ 7,020	$ 5,599