Nature Of Business And Summary Of Significant Accounting Policies (Schedule Of Sales Returns Reserves) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Nature Of Business And Summary Of Significant Accounting Policies [Abstract]
Sales returns reserve balance - beginning of year	$ 70	$ 35	$ 55
Additions to the sales returns reserve	117	101	12
Deductions against the sales returns reserve	(82)	(66)	(32)
Sales returns reserve balance - end of year	$ 105	$ 70	$ 35