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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2019
Jun. 30, 2018
CONSOLIDATED BALANCE SHEETS    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, authorized shares 10,000,000 10,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, authorized shares 100,000,000 100,000,000
Common stock, shares issued 18,167,020 18,032,374
Common stock, shares outstanding 18,167,020 18,032,374