Annual report pursuant to Section 13 and 15(d)

Contingencies (Details Textual)

v3.22.0.1
Contingencies (Details Textual)
1 Months Ended
Sep. 30, 2021
USD ($)
Jan. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Jan. 31, 2020
USD ($)
Jul. 25, 2017
USD ($)
Jan. 27, 2017
USD ($)
Dec. 31, 2010
USD ($)
Loss Contingency Accrual, Ending Balance     $ 4,500,000        
Additional Royalty Due To Disallowed Deductions           $ 4,700,000 $ 4,700,000
Bonds Posted To Appeal IBLA Decision         $ 7,200,000    
Collateral For Bonds Posted Related To Appeal With IBLA     8,200,000 $ 6,900,000 $ 6,900,000    
Minerals Management Service Royalties [Member] | Maximum [Member]              
Claim Value Liability Reserve     $ 250,000,000,000        
BSEE [Member]              
Loss Contingency Number Of Claims Filed   9          
Proposed Civil Penalties $ 46,000 $ 7,700,000          
Payments for Royalties $ 40,200            
Settlement Agreement Annual Instalments Value   $ 720,000