Restricted Cash (Details Narrative) $ in Millions  | 
 Sep. 30, 2021  
USD ($) 
 | 
|---|---|
| Surety Bond [Member] | |
| Represents the amount of reclamation obligations, which are required to be covered by surety performance bonding, as of the balance sheet date. | $ 27.1 | 
| X | ||||||||||
- References No definition available. 
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| X | ||||||||||
- Details 
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