Note 9 - Leases (Details Textual) - USD ($)	12 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Operating Leases, Rent Expense	$ 361,539	$ 57,767	$ 11,382

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration