v3.26.1
Note 7 - Stockholders' Equity (Details Textual) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
May 21, 2025
Sep. 30, 2021
Feb. 18, 2021
Subsidiary or Equity Method Investee [Line Items]                
Share-based Payment Arrangement, Expense $ 2,800,000 $ 1,900,000            
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total 8,100,000   $ 7,400,000          
Common stock issued to directors     179,836 150,387 125,063      
Stock-based compensation $ 2,784,000 $ 1,936,000 $ 10,918,000 $ 8,659,000 $ 6,598,000      
Common stock issued to directors     $ 1,034,000 $ 796,000 $ 676,000      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 1 year 4 months 24 days   1 year 7 months 6 days          
Stock Issued During Period Shares Compensation To Interim CEO       48,489        
Stock Issued During Period Value Compensation To Interim CEO       $ 283,000        
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) 47,134 0            
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation $ 1,200,000              
Shares Withheld for Tax Withholding Obligation, Price Per Share (in dollars per share) $ 24.63              
Common stock, shares authorized (in shares) 1,250,000,000   1,250,000,000 1,250,000,000        
Number of warrants (in shares) 2,060,000   2,068,000          
Conversion of warrants $ 8,000              
Warrants exercise price per share $ 8.02   $ 8.02          
Conversion of Stock Each warrant entitles the warrant holder to purchase one share of our common stock              
Common stock issued upon conversion of series B preffered stock 64,000   11,385 64        
Number of series B preffered stock coverted 8,000   3,541 20        
Dividend per share $ 0.00375           $ 0.01  
At The Market Equity Distribution Agreement [Member]                
Subsidiary or Equity Method Investee [Line Items]                
Redeem of Senior Notes     $ 212,000,000          
Maximum [Member]                
Subsidiary or Equity Method Investee [Line Items]                
Common stock, shares authorized (in shares)           1,250,000,000    
Minimum [Member]                
Subsidiary or Equity Method Investee [Line Items]                
Common stock, shares authorized (in shares)           750,000,000    
Klondex Mines Ltd                
Subsidiary or Equity Method Investee [Line Items]                
Number of warrants (in shares) 2,060,000              
At the market Offering [Member]                
Subsidiary or Equity Method Investee [Line Items]                
Equity Distribution Agreement, Maximum Number of Shares to be Sold (in shares) 59,802,012             60,000,000
At the market Offering [Member] | At The Market Equity Distribution Agreement [Member]                
Subsidiary or Equity Method Investee [Line Items]                
Proceeds from Issuance or Sale of Equity $ 348,500,000              
Payments of Stock Issuance Costs $ 5,400,000