Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Accounts payable, due to related parties	$ 77	$ 141
Common stock, par value (in dollars per share)	$ 0.002	$ 0.002
Common stock, share authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	29,400,843	21,170,074
Common stock, shares outstanding (in shares)	29,365,943	21,135,174
Treasury stock, shares aquired (in shares)	34,900	34,900