Shareholders' Equity (Summary Of The Company's Stock Option Plans) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Shareholders' Equity [Abstract]
Number of Options Outstanding, beginning balance	459,662	545,010	548,800
Weighted Average Exercise Price, beginning balance	$ 3.46	$ 2.89	$ 3.05
Number of Options Outstanding, Options Granted		241,500	30,500
Weighted-Average Exercise Price, Options Granted		$ 3.80	$ 2.35
Number of Options Outstanding, Options Canceled	(4,000)	(129,600)	(34,290)
Weighted-Average Exercise Price, Options Canceled	$ 2.68	$ 3.95	$ 5.08
Number of Options Outstanding, Options Exercised	(100,328)	(197,248)
Weighted -Average Exercise Price, Options Exercised	$ 2.60	$ 1.97
Number of Options Outstanding, ending balance	355,334	459,662	545,010
Weighted Average Exercise Price, ending balance	$ 3.71	$ 3.46	$ 2.89
Weighted-Average Remaining Contractual Term, ending balance	4 years 1 month 28 days
Aggregate Intrinsic Value, ending balance	$ 5,883
Number of Options Outstanding, Vested or expected to vest		343,887
Weighted-Average Exercise Price, Vested or expected to vest		$ 3.70
Weighted-Average Remaining Contractual Term, Vested or expected to vest		4 years 1 month 13 days
Aggregate Intrinsic Value, Vested or expected to vest		5,697
Number of Options Outstanding, Exercisable	240,859	261,546
Weighted-Average Exercise Price, Exercisable	$ 3.59	$ 3.16
Weighted-Average Remaining Contractual Term, Exercisable	3 years 6 months 22 days	3 years 4 months 24 days
Aggregate Intrinsic Value, Exercisable	$ 4,017	$ 573