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CONSOLIDATED BALANCE SHEET (PARENTHETICAL) - $ / shares
Dec. 31, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Preferred stock, par value (in usd per share) $ 0.0001 $ 0.0001
Preferred stock, authorized (shares) 10,000,000 10,000,000
Preferred stock, issued (shares) 0 0
Preferred stock, shares outstanding (shares) 0 0
Common stock, par value (in usd per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (shares) 100,000,000 100,000,000
Common stock, shares issued (shares) 18,069,476 17,972,166
Common stock, shares outstanding (shares) 18,067,392 17,797,178