Quarterly report pursuant to Section 13 or 15(d)

Preferred Stock (Details)

v3.22.2.2
Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 22, 2022
Mar. 22, 2022
Sep. 13, 2021
Feb. 11, 2021
Mar. 31, 2022
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Jan. 14, 2019
Apr. 20, 2018
Class of Stock [Line Items]                        
Preferred stock, shares authorized (in shares)           5,000,000   5,000,000        
Preferred stock, par value (in usd per share)           $ 0.001   $ 0.001        
Preferred stock, shares outstanding (in shares)           49,250            
Number of shares sold under offering (in shares)       3,000,000                
Net proceeds from issuance of preferred stock and warrants     $ 50,600     $ 46,906 $ 0          
Registered Direct Offering                        
Class of Stock [Line Items]                        
Subscription price (in usd per share)     $ 920                  
Original issuance discount percentage     8.00%                  
Aggregate subscription value     $ 54,100                  
Registered Direct Offering | Warrants                        
Class of Stock [Line Items]                        
Number of shares sold under offering (in shares)     47,000,000                  
Series 4 Convertible Preferred Stock                        
Class of Stock [Line Items]                        
Preferred stock, shares authorized (in shares)           10,415   10,415       10,415
Preferred stock, par value (in usd per share)                       $ 1,000
Series preferred stock conversion value (in usd per share)                       $ 828
Preferred stock, shares outstanding (in shares)           1   1        
Series 5 Convertible Preferred Stock                        
Class of Stock [Line Items]                        
Preferred stock, shares authorized (in shares)           12,000   12,000     12,000  
Preferred stock, par value (in usd per share)                     $ 1,000  
Series preferred stock conversion value (in usd per share)                     $ 149.85  
Preferred stock, shares outstanding (in shares)           126   126        
Series 7 Convertible Preferred Stock                        
Class of Stock [Line Items]                        
Mezzanine equity, convertible preferred stock, shares authorized (in shares)     58,750     58,750   58,750        
Mezzanine equity, convertible preferred shares, par value per share (in usd per share)     $ 0.001                  
Mezzanine equity, convertible preferred shares, stated value per share (in usd per share)     $ 1,000                  
Mezzanine equity, convertible preferred shares, maximum voting power percentage     19.99%                  
Mezzanine equity, convertible preferred shares, conversion price (in usd per share)     $ 1.25                  
Net proceeds from issuance of preferred stock and warrants     $ 50,600                  
Common shares issued for conversion of preferred shares (in shares)               9,500        
Series 7 Preferred redeemed for cash (in shares)   49,250                    
Series 7 Preferred redeemed for cash   $ 49,300     $ 49,300              
Mezzanine equity, convertible preferred stock, shares outstanding (in shares)         0 0 0 49,250 0 0    
Series 7 Convertible Preferred Stock | Common Stock                        
Class of Stock [Line Items]                        
Common shares issued for conversion of preferred shares (in shares)               7,600,000        
Series 7 Convertible Preferred Stock | Registered Direct Offering                        
Class of Stock [Line Items]                        
Number of shares sold under offering (in shares)     58,750                  
Subscription price (in usd per share)     $ 920                  
Original issuance discount percentage     8.00%                  
Aggregate subscription value     $ 54,100                  
Series 7 Convertible Preferred Stock | Registered Direct Offering | Warrants                        
Class of Stock [Line Items]                        
Number of shares sold under offering (in shares)     47,000,000                  
Series 8 Convertible Preferred Stock                        
Class of Stock [Line Items]                        
Preferred stock, shares authorized (in shares) 53,197.7234 53,197.7234                    
Preferred stock, par value (in usd per share) $ 0.001 $ 0.001                    
Mezzanine equity, convertible preferred stock, shares authorized (in shares)           53,197.7234   53,197.7234        
Number of shares sold under offering (in shares) 112,778,720                      
Subscription price (in usd per share) $ 940 $ 940                    
Original issuance discount percentage 6.00% 6.00%                    
Aggregate subscription value $ 50,000 $ 50,000                    
Net proceeds from issuance of preferred stock and warrants $ 46,900                      
Mezzanine equity, convertible preferred stock, shares outstanding (in shares)         53,197.7234 53,197.7234   0        
Preferred stock, stated value per share (in usd per share) $ 1,000 $ 1,000                    
Maximum voting power per holder 19.99% 19.99%                    
Preferred stock, convertible, conversion price (in usd per share) $ 0.4717 $ 0.4717