Note 7 - Other Assets - Components of Other Current Assets (Details) - USD ($)	Jun. 30, 2020	Jun. 30, 2019
Prepaid expenses	$ 394,473	$ 462,215
Other current assets	209,471	83,890
Total	$ 603,944	$ 546,105

Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant