Note 10 - Deferred Revenues (Details) - Price Increase Settlement [Member] - USD ($)	1 Months Ended	3 Months Ended
Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2018
Note 10 - Deferred Revenues (Details) [Line Items]
Deferred Revenue, Additions	$ 679,935
Deferred Revenue, Revenue Recognized		$ 73,302
Deferred Revenue			$ 0

Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

No definition available.

Name:	us-gaap_DeferredRevenueAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration