v3.26.3
Subsequent Events (Details Narrative) - USD ($)
$ in Millions
Sep. 22, 2026
Oct. 06, 2026
Ocean Partners [Member]    
Subsequent Event [Line Items]    
Approximate aggregate total for integrated funding and credit support $ 88.0  
Replacement surety bond guarantee 43.1  
Reclamation bond $ 41.0  
Ocean Partners prepayment facility description, subsequent event Ocean Partners will also provide a $40 million concentrate prepayment facility (“Facility”) in three tranches as follows: $10 million at the initial closing of the Facility (expected after the closing of the MTMI Purchase Agreement); $20 million upon a Company board resolution approving a restart or refurbishment program at either of the MTMI properties; and $10 million at the Company’s option after three consecutive months of concentrate deliveries under any of the concentrates contracts. These do not require any production-timing covenants, with repayment of the Facility principally completed through offsets from concentrate deliveries.  
Ocean Partners [Member] | Subsequent Event [Member]    
Subsequent Event [Line Items]    
Pre-bridge financing credited against initial tranche   $ 10.0
Ocean Partners [Member] | Subsequent Event [Member] | Pre Bridge Financing [Member]    
Subsequent Event [Line Items]    
Pre-bridge financing   5.0
Investment in future equity financing   $ 5.0
Rainbow Block [Member]    
Subsequent Event [Line Items]    
Surety bond amount $ 2.3  
Cash collateral released $ 1.5