Quarterly report [Sections 13 or 15(d)]

Income taxes (Narrative) (Details)

v3.25.3
Income taxes (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Income taxes        
Minimum ownership interest in subsidiaries for consolidated income tax return     80.00%  
Effective income tax rate     0.00%  
Income tax expense $ 26,000 $ 69,000 $ 196,000 $ (24,000)