v3.26.1
Note 3 - Note Receivable, Net (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Feb. 06, 2026
Jun. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Dec. 01, 2025
Lion Energy [Member]            
Payments for Advance to Affiliate $ 2,000,000          
Lion Energy Note [Member]            
Financing Receivable, after Allowance for Credit Loss, Current 2,100,000 $ 1,640,000 $ 1,640,000   $ 2,069,000 $ 2,069,000
Interest Receivable, Current $ 31,000 24,000 24,000   $ 0  
Loans and Notes Receivable, Principal Balance   4,100,000 4,100,000      
Financing Receivable, before Allowance for Credit Loss, Current   4,160,000 4,160,000 $ 0    
Investment Income, Interest     60,000      
Financing Receivable, Allowance for Credit Loss, Current   2,496,000 2,496,000      
Financing Receivable, Allowance for Credit Loss on Principal Balance, Current   2,460,000 2,460,000      
Financing Receivable, Allowance for Credit Loss on Accrued Interest, Current   36,000 36,000      
Financing Receivable, Including Interest, after Allowance for Credit Loss, Current   1,664,000 1,664,000      
Financing Receivable, Credit Loss, Expense (Reversal)   $ 2,059,000 $ 2,496,000      
Probability-Weighted Recovery of Gross Carrying Amount   40.00% 40.00%      
Probability-Weighted Recovery of Allowance for Credit Losses   60.00% 60.00%