Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity (Deficit)

v3.20.4
Consolidated Statements of Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
August 2019 ATM Facility [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
August 2019 ATM Facility [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
August 2019 ATM Facility [Member]
Common Stock [Member]
August 2019 ATM Facility [Member]
Additional Paid-in Capital [Member]
August 2019 ATM Facility [Member]
Retained Earnings [Member]
August 2019 ATM Facility [Member]
November 2019 Offering [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
November 2019 Offering [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
November 2019 Offering [Member]
Common Stock [Member]
November 2019 Offering [Member]
Additional Paid-in Capital [Member]
November 2019 Offering [Member]
Retained Earnings [Member]
November 2019 Offering [Member]
Purchase Agreement with LPC [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
Purchase Agreement with LPC [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
Purchase Agreement with LPC [Member]
Common Stock [Member]
Purchase Agreement with LPC [Member]
Additional Paid-in Capital [Member]
Purchase Agreement with LPC [Member]
Retained Earnings [Member]
Purchase Agreement with LPC [Member]
Conversion of Series A Convertible Preferred Stock into Common Stock [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
Conversion of Series A Convertible Preferred Stock into Common Stock [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
Conversion of Series A Convertible Preferred Stock into Common Stock [Member]
Common Stock [Member]
Conversion of Series A Convertible Preferred Stock into Common Stock [Member]
Additional Paid-in Capital [Member]
Conversion of Series A Convertible Preferred Stock into Common Stock [Member]
Retained Earnings [Member]
Conversion of Series A Convertible Preferred Stock into Common Stock [Member]
Conversion of Debt into Series B Convertible Preferred Stock and Common Stock [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
Conversion of Debt into Series B Convertible Preferred Stock and Common Stock [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
Conversion of Debt into Series B Convertible Preferred Stock and Common Stock [Member]
Common Stock [Member]
Conversion of Debt into Series B Convertible Preferred Stock and Common Stock [Member]
Additional Paid-in Capital [Member]
Conversion of Debt into Series B Convertible Preferred Stock and Common Stock [Member]
Retained Earnings [Member]
Conversion of Debt into Series B Convertible Preferred Stock and Common Stock [Member]
Series A and Series B Warrants [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
Series A and Series B Warrants [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
Series A and Series B Warrants [Member]
Common Stock [Member]
Series A and Series B Warrants [Member]
Additional Paid-in Capital [Member]
Series A and Series B Warrants [Member]
Retained Earnings [Member]
Series A and Series B Warrants [Member]
Series A-2 and Series B-2 Warrants [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
Series A-2 and Series B-2 Warrants [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
Series A-2 and Series B-2 Warrants [Member]
Common Stock [Member]
Series A-2 and Series B-2 Warrants [Member]
Additional Paid-in Capital [Member]
Series A-2 and Series B-2 Warrants [Member]
Retained Earnings [Member]
Series A-2 and Series B-2 Warrants [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Series B Preferred Stock [Member]
Total
Balances (in shares) at Dec. 31, 2018                                                                                     46,363        
Balances at Dec. 31, 2018                                                                                     $ 160,297 $ (155,385)   $ 4,912
Stock offering, net of issuance costs (in shares) 100,418     100,423 547,342 194,595                                                                                
Stock offering, net of issuance costs $ 6,322 $ 6,322 $ 9,952 $ 9,952                                                                          
Conversion of stock (in shares)                                     (362,124) 362,124       31,300                                            
Conversion of stock                                     $ 35,413 $ 35,413                                      
Series B convertible preferred stock dividends                                                                                     (380)   (380)
Series B convertible preferred stock dividends paid in PIK shares (in shares)                                                                                     378     378  
Series B convertible preferred stock dividends paid in PIK shares                                                                                     378   378
Stock-based compensation expense                                                                                         2,251   2,251
Issuance of restricted common shares in connection with consulting agreement (in shares)                                                                                     3,869        
Issuance of restricted common shares in connection with consulting agreement                                                                                     75   75
Issuance of common shares from employee stock purchase plan (in shares)                                                                                         154        
Issuance of common shares from employee stock purchase plan                                                                                         56   56
Issuance of restricted stock awards to directors, employees and consultants (in shares)                                                                                     118        
Issuance of restricted stock awards to directors, employees and consultants                                                                                     74   74
Reverse stock split - cancellation and payout of fractional shares (in shares)                                                                                     (70)        
Reverse stock split - cancellation and payout of fractional shares                                                                                     (6)   (6)
Net loss                                                                                       (42,526)   (42,526)
Balances (in shares) at Dec. 31, 2019                                                                                     185,218 31,678 707,571        
Balances at Dec. 31, 2019                                                                                     214,432 (197,911)   16,521
Balances (in shares) at Dec. 31, 2018                                                                                     46,363        
Balances at Dec. 31, 2018                                                                                     160,297 (155,385)   4,912
Series B convertible preferred stock dividends paid in PIK shares (in shares)                                                                                               4,519  
Balances (in shares) at Dec. 31, 2020                                                                                     35,819 2,171,316        
Balances at Dec. 31, 2020                                                                                     226,800 (219,826)   6,974
Balances (in shares) at Dec. 31, 2019                                                                                     185,218 31,678 707,571        
Balances at Dec. 31, 2019                                                                                     214,432 (197,911)   16,521
Stock offering, net of issuance costs (in shares)                                                                                     52,500        
Stock offering, net of issuance costs                                                                                     341   341
Conversion of stock (in shares)                                                                                     (185,218) 185,218        
Conversion of stock                                                                                      
Series B convertible preferred stock dividends                                                                                     (4,149)   (4,149)
Series B convertible preferred stock dividends paid in PIK shares (in shares)                                                                                     4,141     4,141  
Series B convertible preferred stock dividends paid in PIK shares                                                                                     4,141   4,141
Stock-based compensation expense                                                                                     2,577   2,577
Issuance of restricted common shares in connection with consulting agreement (in shares)                                                                                     10,995        
Issuance of restricted common shares in connection with consulting agreement                                                                                     74   74
Issuance of common shares from employee stock purchase plan (in shares)                                                                                     84        
Issuance of common shares from employee stock purchase plan                                                                                      
Issuance of restricted stock awards to directors, employees and consultants (in shares)                                                                                     25        
Net loss                                                                                     (21,915)   (21,915)
Issuance costs             $ (33) $ (33) $ (494) $ (494)                                                              
Issuance of common shares in connection with warrant exercises (in shares)                                                             1,115,863       93,129                    
Issuance of common shares in connection with warrant exercises                                                             $ 7,814 $ 7,814 $ 593 $ 593              
Modification of Series A and B warrants in connection with 2020 Warrant Offering                                                             $ 1,838 $ 1,838                          
Issuance of Series A-2 and B-2 warrants in connection with 2020 Warrant Offering                                                                                     1,838   1,838
Transaction costs in connection with warrant offering                                                                         $ (1,838) $ (1,838)              
Transaction costs in connection with warrant offering                                                                                     (334)   (334)
Restricted stock awards                                                                                      
Reverse stock split - rounding adjustment (in shares)                                                                                     5,931        
Balances (in shares) at Dec. 31, 2020                                                                                     35,819 2,171,316        
Balances at Dec. 31, 2020                                                                                     $ 226,800 $ (219,826)   $ 6,974