Note 1 - Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Employee Stock Option [Member]
Anti-dilutive stock options (in shares)	2,900,450	888,950	2,900,450	401,200
Warrant [Member]
Anti-dilutive stock options (in shares)	8,230,769		8,230,769
Anti-dilutive stock options (in shares)	11,131,219	888,950	11,131,219	401,200