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Investment in Equity Security (Narrative) (Details)
$ / shares in Units, $ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
May 04, 2021
CAD ($)
$ / shares
shares
May 04, 2021
USD ($)
shares
Jun. 30, 2019
USD ($)
shares
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
May 04, 2021
$ / shares
Net Investment Income [Line Items]                  
Investment in BeMetals, at fair value       $ 669,624   $ 669,624   $ 1,520,684  
Unrealized gain (loss) on investment       (230,072) $ (842,931) (851,060) $ (913,942)    
BeMetals USA Corp [Member]                  
Net Investment Income [Line Items]                  
Investment in BeMetals, at fair value       $ 669,624   $ 669,624   $ 1,520,684  
Sale of stock, number of shares issued in transaction | shares 2,000,000 2,000,000              
Sale of stock, consideration received on transaction $ 800,000 $ 649,557              
Sale of stock price per share | (per share) $ 0.4               $ 0.325
Foreign exchange gain (loss)   $ 9,147              
BeMetals Option Agreement [Member] | BeMetals USA Corp [Member]                  
Net Investment Income [Line Items]                  
Number of common shares received | shares     10,000,000            
Fair value of common shares received     $ 1,883,875