Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.19.3
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Accumulated depreciation $ 2,588,647 $ 2,407,477
Preferred stock, par value (in usd per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 75,000,000 75,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 250,000,000 250,000,000
Common stock, shares issued (in shares) 66,189,613 58,270,934
Common stock, shares outstanding (in shares) 66,189,613 58,270,934