Note 2 - Summary of Significant Accounting Policies (Details Textual)	3 Months Ended												12 Months Ended
	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Revenue, Net	$ 10,892,868	$ 7,220,626	$ 3,346,315	$ 2,356,926	$ 2,692,040	$ 1,530,244	$ 1,046,624	$ 1,376,872	$ 1,794,910	$ 1,804,614	$ 1,091,182	$ 1,162,218	$ 23,816,735	$ 6,645,780	$ 5,852,924
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]
Revenue, Net													$ 0	$ 1,300,000	$ 2,200,000
Number of Customers													0	1	1