Note 13 - Licensing Agreement (Details Textual) - USD ($)		3 Months Ended		9 Months Ended
	Feb. 20, 2018	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Proceeds from License Fees Received				$ 1,000,000
Revenues, Total		$ 1,012,075	$ 24,001	1,086,468	$ 75,087
Exclusive Technology License Agreement with Vendor [member]
Proceeds from License Fees Received	$ 1,000,000
License Agreement, Percent of Net Sales, Years One to Three	10.00%
License Agreement, Percent of Net Sales, Years Four to Seven	7.50%
License Agreement, Percent of Net Sales, Years Eight to Ten	5.00%
Exclusive Technology License Agreement with Vendor [member] | Royalty [Member]
Revenues, Total				$ 0