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Common Stock (Details Narrative)
$ / shares in Units, $ in Thousands
9 Months Ended
Aug. 07, 2018
shares
Jun. 14, 2018
USD ($)
$ / shares
shares
Jun. 14, 2018
USD ($)
$ / shares
shares
May 03, 2018
USD ($)
shares
Apr. 23, 2018
shares
Apr. 18, 2018
USD ($)
a
shares
Sep. 27, 2017
USD ($)
shares
Sep. 25, 2017
USD ($)
shares
Apr. 14, 2017
USD ($)
Mar. 09, 2017
USD ($)
Sep. 30, 2018
USD ($)
shares
Sep. 30, 2017
USD ($)
Proceeds from common stock                     $ 5,917 $ 16,395
Fair value of shares issued                     95 $ 300
Number of shares issued for services | shares       172,727                
Number of shares issued for services, value       $ 95             95  
Option Agreement [Member]                        
Number of common stock issued | shares           200,000            
Fair value of shares issued           $ 114            
Mining claims covering area | a           3,000            
ATM Offering [Member]                        
Net proceeds from direct offering                 $ 30,000 $ 8,000    
Sales commission percentage                 2.50%      
ATM Offering [Member] | October 31, 2018 [Member]                        
Proceeds from common stock                     $ 4,600  
Number of common stock sold | shares                     16,078,900  
Common Stock [Member]                        
Number of common stock issued | shares                     17,695,448  
Number of shares issued for services | shares                     172,727  
Number of shares issued for services, value                      
Common Stock [Member] | ATM Offering [Member]                        
Proceeds from common stock                     $ 1,800  
Number of common stock sold | shares                     6,577,070  
Available for future sales                     $ 25,300  
Common stock registered for sale, value                     $ 4,500  
Aspire Capital Fund LLC [Member]                        
Net proceeds from direct offering   $ 2,900                    
Number of common stock issued | shares 4,825,509 3,717,773                    
Average price per shares issued | $ / shares   $ 0.34 $ 0.34                  
Proceeds from common stock   $ 1,300                    
Warrant purchase price per share | $ / shares   $ 0.01 $ 0.01                  
Aspire Capital Fund LLC [Member] | Common Stock Purchase Agreement [Member]                        
Net proceeds from direct offering               $ 22,000        
Number of common stock issued | shares     2,725,096       1,428,571 880,000     2,575,096  
Proceeds from common stock     $ 1,500       $ 2,000       $ 1,300  
Aspire Capital Fund LLC [Member] | Common Stock Warrants [Member]                        
Number of warrants issued for common stock | shares   4,968,518 4,968,518                  
Prefunded warrants price per share | $ / shares   $ 0.33 $ 0.33                  
Net proceeds of warrants   $ 1,600                    
Alabama Graphite [Member]                        
Number of common stock issued | shares         11,625,210              
Ownership percentage         100.00%