Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.21.1
Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2020
Jul. 17, 2020
Jul. 16, 2020
Dec. 31, 2019
Jun. 18, 2019
Jun. 17, 2019
May 07, 2014
Statement Of Financial Position [Abstract]              
Preferred stock, par value (in dollars per share) $ 0.001     $ 0.001     $ 0.001
Preferred stock, shares authorized (in shares) 5,000,000     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 (in dollars per share) $ 0.001     $ 0.001      
Common stock, shares authorized (in shares) 100,000,000 100,000,000 250,000,000 100,000,000 250,000,000 125,000,000  
Common stock, shares issued (in shares) 19,663,698 10,508,302 105,083,291 9,741,372      
Common stock, shares outstanding (in shares) 19,663,698 10,508,302 105,083,291 9,741,372