Supplemental Balance Sheet Disclosures (Details 2) (USD $)	3 Months Ended		6 Months Ended					12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Sep. 30, 2012	Mar. 31, 2013 Computer equipment	Sep. 30, 2012 Computer equipment	Sep. 30, 2013 Corporate airplane	Mar. 31, 2013 Corporate airplane	Sep. 30, 2012 Corporate airplane	Mar. 31, 2013 Furniture and office equipment	Sep. 30, 2012 Furniture and office equipment	Mar. 31, 2013 Manufacturing facility	Sep. 30, 2012 Manufacturing facility	Mar. 31, 2013 Equipment	Sep. 30, 2012 Equipment	Mar. 31, 2013 Land	Sep. 30, 2012 Land
Property and equipment
Property and equipment, gross	$ 17,408,155		$ 17,408,155		$ 17,255,166	$ 2,203,457	$ 2,090,556		$ 3,104,255	$ 3,082,186	$ 1,076,849	$ 1,076,849	$ 5,616,422	$ 5,605,616	$ 4,385,927	$ 4,378,714	$ 1,021,245	$ 1,021,245
Less: Accumulated depreciation and amortization	(10,257,401)		(10,257,401)		(10,040,788)
Property and equipment, net	7,150,754		7,150,754		7,214,378
Depreciation	111,000	126,000	217,000	251,000				0
Other assets
Intangible assets, net	129,800		129,800		158,600
Accumulated amortization of intangible assets	470,437		470,437		441,637
Impairment charges			0	0
Total intangible amortization expense	$ 16,000	$ 5,000	$ 29,000	$ 47,000