v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Income Taxes (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Redeemable preferred shares      
Provision for income tax   $ 74,000 $ (5,000)
Spring Valley Acquisition III      
Redeemable preferred shares      
Unrecognized tax benefits $ 0 0  
Accrued for interest and penalties 0 $ 0  
Provision for income tax $ 0