Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Stockholder's Equity (Unaudited)

v3.20.2
Consolidated Statements of Stockholder's Equity (Unaudited) - USD ($)
Total
LPC [Member]
December 2019 Financing [Member]
April 2020 Private Placement [Member]
July 2020 Registered Direct Offering [Member]
August 2020 Public Offering [Member]
October 2018 Financing [Member]
Cumulative Adjustment on Adoption of Lease Standard [Member]
Common stock [Member]
Common stock [Member]
Series B Convertible Preferred Stock [Member]
Common stock [Member]
LPC [Member]
Common stock [Member]
April 2020 Private Placement [Member]
Common stock [Member]
July 2020 Registered Direct Offering [Member]
Common stock [Member]
August 2020 Public Offering [Member]
Preferred stock [Member]
Preferred stock [Member]
Series B Convertible Preferred Stock [Member]
Additional paid-in capital [Member]
Additional paid-in capital [Member]
Series B Convertible Preferred Stock [Member]
Additional paid-in capital [Member]
LPC [Member]
Additional paid-in capital [Member]
December 2019 Financing [Member]
Additional paid-in capital [Member]
April 2020 Private Placement [Member]
Additional paid-in capital [Member]
July 2020 Registered Direct Offering [Member]
Additional paid-in capital [Member]
August 2020 Public Offering [Member]
Additional paid-in capital [Member]
October 2018 Financing [Member]
Accumulated other comprehensive income (loss) [Member]
Accumulated deficit [Member]
Accumulated deficit [Member]
Cumulative Adjustment on Adoption of Lease Standard [Member]
Beginning Balance at Dec. 31, 2018 $ 15,802,000             $ (3,000) $ 18,000               $ 41,161,000               $ 4,000 $ (25,381,000) $ (3,000)
Beginning Balance, Shares at Dec. 31, 2018                 336,055           579                        
Restricted stock unit settlements, Shares                 4                                    
Stock-based compensation expense 290,000                               290,000                    
Adjustments to final October 2018 financing costs             $ 4,000                                 $ 4,000      
Accounting Standards Update [Extensible List]               us-gaap:AccountingStandardsUpdate201602Member                                      
Net loss (5,904,000)                                                 (5,904,000)  
Ending Balance at Mar. 31, 2019 10,189,000               $ 18,000               41,455,000               4,000 (31,288,000)  
Ending Balance, Shares at Mar. 31, 2019                 336,059           579                        
Beginning Balance at Dec. 31, 2018 $ 15,802,000             $ (3,000) $ 18,000               41,161,000               4,000 (25,381,000) $ (3,000)
Beginning Balance, Shares at Dec. 31, 2018                 336,055           579                        
Restricted stock unit settlements, Shares 256                                                    
Net loss $ (13,201,000)                                                    
Ending Balance at Sep. 30, 2019 8,141,000               $ 19,000               50,628,000               4,000 (42,510,000)  
Ending Balance, Shares at Sep. 30, 2019                 405,136                                    
Beginning Balance at Mar. 31, 2019 10,189,000               $ 18,000               41,455,000               4,000 (31,288,000)  
Beginning Balance, Shares at Mar. 31, 2019                 336,059           579                        
Stock-based compensation expense 317,000                               317,000                    
Shares issued   $ 423,000                                 $ 423,000                
Shares issued, Shares                     6,200                                
Shares issued on conversion of preferred shares                             $ (579)                        
Shares issued on conversion of preferred shares, Shares                 7,237                                    
Shares issued on exercise of warrants 4,199,000               $ 1,000               4,198,000                    
Shares issued on exercise of warrants, Shares                 55,390                                    
Issuance of inducement warrants                                 3,925,000                 (3,925,000)  
Net loss (3,624,000)                                                 (3,624,000)  
Ending Balance at Jun. 30, 2019 $ 11,504,000               $ 19,000               50,318,000               4,000 (38,837,000)  
Ending Balance, Shares at Jun. 30, 2019                 404,886                                    
Restricted stock unit settlements, Shares 256               250                                    
Stock-based compensation expense $ 310,000                               310,000                    
Net loss (3,673,000)                                                 (3,673,000)  
Ending Balance at Sep. 30, 2019 8,141,000               $ 19,000               50,628,000               4,000 (42,510,000)  
Ending Balance, Shares at Sep. 30, 2019                 405,136                                    
Beginning Balance at Dec. 31, 2019 18,050,000               $ 41,000               63,709,000               4,000 (45,704,000)  
Beginning Balance, Shares at Dec. 31, 2019                 1,474,258           1,121                        
Stock-based compensation expense 302,000                               302,000                    
Costs relating to financing and purchase agreement   (13,000) $ (34,000)                               (13,000) $ (34,000)              
Shares issued on conversion of preferred shares                   $ 2,000               $ (2,000)                  
Shares issued on conversion of preferred shares, Shares                   93,379           (1,121)                      
Net loss (3,320,000)                                                 (3,320,000)  
Ending Balance at Mar. 31, 2020 14,985,000               $ 43,000               63,962,000               4,000 (49,024,000)  
Ending Balance, Shares at Mar. 31, 2020                 1,567,637                                    
Beginning Balance at Dec. 31, 2019 $ 18,050,000               $ 41,000               63,709,000               4,000 (45,704,000)  
Beginning Balance, Shares at Dec. 31, 2019                 1,474,258           1,121                        
Restricted stock unit settlements, Shares 236                                                    
Net loss $ (10,006,000)                                                    
Ending Balance at Sep. 30, 2020 25,675,000               $ 74,000               81,307,000               4,000 (55,710,000)  
Ending Balance, Shares at Sep. 30, 2020                 3,616,414                                    
Beginning Balance at Mar. 31, 2020 14,985,000               $ 43,000               63,962,000               4,000 (49,024,000)  
Beginning Balance, Shares at Mar. 31, 2020                 1,567,637                                    
Stock-based compensation expense 308,000                               308,000                    
Shares issued       $ 1,579,000               $ 6,000                 $ 1,573,000            
Shares issued, Shares                       280,782                              
Costs relating to financing and purchase agreement   $ (1,000)                                 $ (1,000)                
Shares issued on conversion of preferred shares                 $ 2,000               (2,000)                    
Shares issued on exercise of warrants 589,000                               589,000                    
Shares issued on exercise of warrants, Shares                 89,281                                    
Adjustment of fractional shares on reverse stock split                 3                                    
Net loss (2,922,000)                                                 (2,922,000)  
Ending Balance at Jun. 30, 2020 $ 14,538,000               $ 51,000               66,429,000               4,000 (51,946,000)  
Ending Balance, Shares at Jun. 30, 2020                 1,937,703                                    
Restricted stock unit settlements, Shares 236               128                                    
Stock-based compensation expense $ 281,000                               281,000                    
Shares issued         $ 5,307,000 $ 6,822,000             $ 15,000 $ 1,000               $ 5,292,000 $ 6,821,000        
Shares issued, Shares                         731,707 569,043                          
Shares issued on exercise of warrants 2,491,000               $ 7,000               2,484,000                    
Shares issued on exercise of warrants, Shares                 377,845                                    
Adjustment of fractional shares on reverse stock split                 (12)                                    
Net loss (3,764,000)                                                 (3,764,000)  
Ending Balance at Sep. 30, 2020 $ 25,675,000               $ 74,000               $ 81,307,000               $ 4,000 $ (55,710,000)  
Ending Balance, Shares at Sep. 30, 2020                 3,616,414