Consolidated Balance Sheets (Parentheticals)	12 Months Ended
	Jun. 30, 2018 $ / shares shares	Jun. 30, 2017 $ / shares shares
Common stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
Common stock, authorized (in shares)	900,000,000	900,000,000
Common stock, issued (in shares)	29,559,139	29,559,139
Common stock, outstanding (in shares)	29,559,139	29,559,139
Reverse Stock Split [Member]
Reverse stock split	30	30
Series B Convertible Preferred Stock [Member]
Convertible preferred stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
Convertible preferred stock, authorized (in shares)	50,000,000	50,000,000
Convertible preferred stock, issued (in shares)	0	436,951
Convertible preferred stock, outstanding (in shares)	0	436,951
Series B Preferred Stock [Member]
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	50,000,000	50,000,000
Preferred stock, issued (in shares)	436,951	0
Preferred stock, outstanding (in shares)	436,951	0