v3.26.1
Fair value estimates - Additional Quantitative Information about Assets Measured at Fair Value on Nonrecurring Basis (Details) - Nonrecurring Basis - Level 3 - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Loans individually evaluated for credit loss    
Fair Value Inputs, Assets, Quantitative Information    
Assets measured at fair value $ 7,712 $ 8,871
Other Real Estate Owned    
Fair Value Inputs, Assets, Quantitative Information    
Assets measured at fair value $ 1,682 $ 1,682
Measurement Input, Appraisal Adjustment | Loans individually evaluated for credit loss | Minimum    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of appraisal adjustments 0.00% 0.00%
Measurement Input, Appraisal Adjustment | Loans individually evaluated for credit loss | Maximum    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of appraisal adjustments 234.00% 100.00%
Measurement Input, Appraisal Adjustment | Loans individually evaluated for credit loss | Weighted Average    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of appraisal adjustments 75.40% 52.40%
Measurement Input, Appraisal Adjustment | Other Real Estate Owned | Minimum    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of appraisal adjustments 10.00% 10.00%
Measurement Input, Appraisal Adjustment | Other Real Estate Owned | Maximum    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of appraisal adjustments 25.00% 25.00%
Measurement Input, Appraisal Adjustment | Other Real Estate Owned | Weighted Average    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of appraisal adjustments 16.90% 16.90%
Measurement Input, Liquidation expenses | Loans individually evaluated for credit loss | Minimum    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of liquidation expenses 0.00% 0.00%
Measurement Input, Liquidation expenses | Loans individually evaluated for credit loss | Maximum    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of liquidation expenses 0.00% 12.20%
Measurement Input, Liquidation expenses | Loans individually evaluated for credit loss | Weighted Average    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of liquidation expenses 0.00% 0.26%
Measurement Input, Liquidation expenses | Other Real Estate Owned | Minimum    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of liquidation expenses 0.00% 0.00%
Measurement Input, Liquidation expenses | Other Real Estate Owned | Maximum    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of liquidation expenses 0.00% 0.00%
Measurement Input, Liquidation expenses | Other Real Estate Owned | Weighted Average    
Fair Value Inputs, Assets, Quantitative Information    
Range and weighted average of liquidation expenses 0.00% 0.00%