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Interim Financial Statements - Narrative (Details)
1 Months Ended 3 Months Ended 6 Months Ended 11 Months Ended 12 Months Ended
Jul. 22, 2020
USD ($)
$ / shares
shares
Jul. 13, 2020
USD ($)
shares
Nov. 28, 2019
Sep. 26, 2019
USD ($)
Jul. 31, 2020
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
shares
Mar. 31, 2020
USD ($)
Jun. 30, 2019
USD ($)
$ / shares
Mar. 31, 2019
USD ($)
Jun. 30, 2020
USD ($)
shares
Jun. 30, 2019
USD ($)
$ / shares
Jun. 30, 2019
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
shares
Jul. 09, 2020
USD ($)
Apr. 30, 2020
USD ($)
Jan. 13, 2017
USD ($)
Line of Credit Facility [Line Items]                                  
Accumulated deficit             $ 234,877,498       $ 234,877,498     $ 235,890,272      
Net income (loss)             1,275,986 $ (263,212) $ (2,077,744) $ (1,835,065) 1,012,774 $ (3,912,809)          
Net cash used in operating activities                     381,224 1,648,714          
Cash and cash equivalents             968,211       968,211     1,015,857      
Long-term debt             $ 5,298,017       $ 5,298,017     $ 5,575,168      
Common stock, shares issued (in shares) | shares             28,815,000       28,815,000     27,236,489      
Proceeds from the issuance of common stock                     $ 242,621 $ 1,489,029 $ 1,700,000        
Number of shares issued in transaction (in shares) | shares                         2,327,400        
Average price per share (in dollars per share) | $ / shares                 $ 0.74     $ 0.74 $ 0.74        
Investment into a qualified opportunity zone fund             $ 1,751,050       1,751,050     $ 1,501,050      
Variable interest entity, ownership percentage                           9.00%      
Variable interest entity, shares authorized (in shares) | shares                           75,000,000      
Companies advances             140,000       140,000     $ 0      
Reverse stock split ratio     0.2                            
Sierra Springs, LLC                                  
Line of Credit Facility [Line Items]                                  
Investment into a qualified opportunity zone fund             300,000       300,000     300,000      
Companies advances             100,000       100,000            
Forecast | Silver Springs                                  
Line of Credit Facility [Line Items]                                  
Proceeds from sale of assets           $ 10,000,000                      
Subsequent Event | Triton                                  
Line of Credit Facility [Line Items]                                  
Aggregate offering price, up to                             $ 1,250,000    
Common stock, aggregate offering agreement, unused capacity                             $ 1,250,000    
Common stock, shares issued (in shares) | shares 2,040,483                                
Proceeds from the issuance of common stock $ 1,250,000                                
Number of shares issued in transaction (in shares) | shares 2,040,483                                
Average price per share (in dollars per share) | $ / shares $ 0.61                                
Subsequent Event | Leviston Resources LLC                                  
Line of Credit Facility [Line Items]                                  
Aggregate offering price, up to   $ 2,500,000                              
Fee percentage paid to issuance common stock   5.00%                              
Number of shares issued to paid fee (in shares) | shares   173,611                              
Common stock, aggregate offering agreement, unused capacity         $ 1,900,000                        
Proceeds from the issuance of common stock         $ 650,000                        
Number of shares issued in transaction (in shares) | shares         1,029,741                        
Average price per share (in dollars per share) | $ / shares         $ 0.63                        
Subsequent Event | Sierra Springs, LLC                                  
Line of Credit Facility [Line Items]                                  
Companies advances         $ 300,000                        
Paycheck Protection Program grant                                  
Line of Credit Facility [Line Items]                                  
Principal amount             261,170       261,170         $ 300,000  
Secured Debt | Senior Secured Debenture (GF Comstock 2)                                  
Line of Credit Facility [Line Items]                                  
Long-term debt             4,756,901       4,756,901     $ 4,929,277      
Principal amount                                 $ 10,723,000
Comstock Industrial LLC                                  
Line of Credit Facility [Line Items]                                  
Purchase price       $ 6,500,000                          
Downtown Silver Springs, LLC Equity Purchase Agreement                                  
Line of Credit Facility [Line Items]                                  
Purchase option, water and sewer rights       $ 3,600,000     $ 3,600,000       $ 3,600,000            
Comstock Mining LLC                                  
Line of Credit Facility [Line Items]                                  
Membership interest                     45.43%