Note 13 - Segment and Related Information - Revenue By Geographic Location (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Revenues	$ 6,645,780	$ 5,852,924	$ 6,305,836
UNITED STATES
Revenues	6,492,423	5,678,888	6,149,883
AUSTRALIA
Revenues	60,412	20,043	64,744
CANADA
Revenues	59,653	75,612	58,983
England [Member]
Revenues	25,789	21,822	6,938
MEXICO
Revenues	6,976	26,902	25,288
Taiwan and Other [Member]
Revenues	$ 527	$ 29,657