Stockholders' Equity (Schedule Of Restricted Stock Unit Information) (Details)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options Outstanding, beginning balance	459,662	545,010	548,800
Number of Options Outstanding, Options Granted		241,500	30,500
Number of Options Outstanding, Options Canceled	(4,000)	(129,600)	(34,290)
Number of Options Outstanding, Options Vested		(343,887)
Number of Options Outstanding, ending balance	355,334	459,662	545,010
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options Outstanding, beginning balance	294,344	45,841	39,494
Number of Options Outstanding, Options Granted	294,900	282,500	27,000
Number of Options Outstanding, Options Canceled	(28,501)	(13,504)	(2,501)
Number of Options Outstanding, Options Vested	(96,159)	(20,493)	(18,152)
Number of Options Outstanding, ending balance	464,584	294,344	45,841