XML 17 R5.htm IDEA: XBRL DOCUMENT v3.21.1
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Beginning balance, value at Dec. 31, 2019 $ 9,201 $ 271 $ 704,351 $ (695,421)
Beginning balance, shares at Dec. 31, 2019   271,177,000    
Shares issued for exercise of options and warrants 72   72  
Shares issued for exercise of options and warrants, net (in shares)   351,000    
Share-based compensation 2,366   2,366  
Shares issued for vested restricted stock units (in shares)   150,000    
Net loss (56,849)     (56,849)
Ending balance, value at Mar. 31, 2020 (45,210) $ 271 706,789 (752,270)
Ending balance, shares at Mar. 31, 2020   271,678,000    
Beginning balance, value at Dec. 31, 2020 $ (124,001) $ 300 754,644 (878,945)
Beginning balance, shares at Dec. 31, 2020 299,765,000 299,765,000    
Shares issued for sale of common stock, net of cost, value $ 150,899 $ 93 150,806  
Shares issued for sale of common stock, net of cost, shares   92,870,000    
Shares issued for exercise of options and warrants 50   50  
Shares issued for exercise of options and warrants, net (in shares)   503,000    
Share-based compensation 2,957   2,957  
Shares issued for vested restricted stock units (in shares)   52,000    
Net loss (39,383)     (39,383)
Ending balance, value at Mar. 31, 2021 $ (9,478) $ 393 $ 908,457 $ (918,328)
Ending balance, shares at Mar. 31, 2021 393,190,000 393,190,000