Consolidated Statements of Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Stock Subscriptions Receivable [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2017 388,081,117     134,806,051    
Balance at Dec. 31, 2017 $ 388 $ 226,884 $ (30) $ (500) $ (253,963) $ (27,221)
Issuance of common shares for prepaid services (in shares) 4,166,667        
Issuance of common shares for prepaid services $ 4 996 1,000
Issuance of warrants with debt 2,695 2,695
Surrender and cancellation of common shares (in shares) (3,000,000)        
Surrender and cancellation of common shares $ (3) 3
Stock-based compensation (in shares) 1,202,095        
Stock-based compensation $ 1 47 48
Net loss (20,409) (20,409)
Reclassification of derivative liabilities          
Balance (in shares) at Dec. 31, 2018 390,449,879     134,806,051    
Balance at Dec. 31, 2018 $ 390 230,625 (30) $ (500) (274,372) (43,887)
Net loss (44,501) (44,501)
Reclassification of derivative liabilities 628 628
Balance (in shares) at Dec. 31, 2019 390,449,879     134,806,051    
Balance at Dec. 31, 2019 $ 390 $ 231,253 $ (30) $ (500) $ (318,873) $ (87,760)