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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
Dec. 31, 2018
Jun. 30, 2018
Statement of Financial Position [Abstract]    
Preferred stock, par value (USD per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (USD per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 40,000,000 40,000,000
Common stock, shares issued (in shares) 14,267,000 14,073,000
Common stock, shares outstanding (in shares) 14,267,000 14,073,000