Consolidated Balance Sheets (Parentheticals) - USD ($)	Sep. 30, 2018	Sep. 30, 2017
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	264,000	243,536
Preferred stock, shares outstanding (in shares)	262,364	241,900
Preferred stock, liquidation preference	$ 2,624
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	4,241,225	4,200,219
Common stock, shares outstanding (in shares)	4,241,225	4,200,219
Series A Convertible Preferred Stock [Member]
Preferred stock, shares authorized (in shares)	264,000