Basis of Presentation - Liquidity and Capital Resources (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Sep. 30, 2011	Sep. 30, 2010
Cash and cash equivalents	$ 20,245,000	$ 18,829,000	$ 20,245,000	$ 18,829,000	$ 15,598,000	$ 19,944,000
Working capital	7,200,000		7,200,000
Net loss	9,039,000	11,079,000	32,603,000	19,929,000
Net cash used in operating activities			$ 4,026,000	$ 2,469,000