XML 68 R56.htm IDEA: XBRL DOCUMENT v3.22.0.1
Stockholders' Equity (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Jul. 31, 2021
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Preferred stock, shares authorized     3,000,000 3,000,000  
Preferred stock, shares outstanding     0 0  
Net proceeds from sale of common stock     $ 269,893 $ 170,792 $ 16,248
Series C-1 Preferred Stock          
Preferred stock, shares authorized     350,000    
Preferred stock, shares outstanding     0 0  
Common Stock          
Shares issued in connection with at the market agreement (in shares)       7,125,004 5,011,157
Net proceeds from sale of common stock       $ 29,400 $ 16,200
Common stock issued (in shares)     6,845,238 15,384,614  
Aggregate gross offering price available     $ 50,000    
Underwritten Public Offering          
Net proceeds from sale of common stock $ 269,900 $ 141,400      
Common stock issued (in shares) 6,845,238 15,384,614