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Stockholders' Equity - Common Stock Issuances - Additional Information (Details) - $ / shares
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Stockholders Equity Note [Line Items]    
Common stock, shares issued (in shares) 67,091 14,715
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common Stock [Member]    
Stockholders Equity Note [Line Items]    
Convertible preferred stock, shares upon Conversion 13,455  
Common stock, par value (in dollars per share) $ 0.01  
Series E and E1 Convertible Preferred Stock [Member]    
Stockholders Equity Note [Line Items]    
Common stock, shares issued (in shares) 565