Note 16 - Segment and Related Information - Revenue By Geographic Location (Details) - USD ($)	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Sales	$ 23,816,735	$ 6,645,780	$ 5,852,924
UNITED STATES
Sales	22,735,947	6,492,423	5,678,888
AUSTRALIA
Sales	4,112	60,412	20,043
CANADA
Sales	419,625	59,653	75,612
England [Member]
Sales		25,789	21,822
MEXICO
Sales	315,869	6,976	26,902
POLAND
Sales	316,666
Other Foreign Countries [Member]
Sales	$ 24,515	$ 527	$ 29,657