v3.26.1
Derivative Instruments - Schedule of Notional and Fair Value Amounts of Derivative Instruments (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Derivatives, Fair Value [Line Items]          
Net Change in Other Comprehensive Income (Loss) $ (5,400) $ (14,212) $ (12,368) $ (33,399)  
Fair Value Hedges          
Derivatives, Fair Value [Line Items]          
Derivative assets, weighted average pay rate 1.21%   1.21%   1.21%
Derivative assets, notional amount $ 1,001,715   $ 1,001,715   $ 1,001,715
Derivative assets, fair value 64,564   64,564   59,829
Derivative liabilities, Notional 325,000   325,000   325,000
Derivative liabilities, Fair Value (9,057)   (9,057)   (3,337)
Carrying Amount of Hedged Assets 962,791   962,791   970,976
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of Hedged Assets $ 64,738   $ 64,738   $ 60,013
Hedged Asset Statement Of Financial Position [Extensible Enumeration] Available-for-sale securities   Available-for-sale securities   Available-for-sale securities
Carrying Amount of Hedged Liabilities $ 312,028   $ 312,028   $ 317,714
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of Hedged Liabilities $ (9,339)   $ (9,339)   $ (3,455)
Hedged Liability, Statement of Financial Position [Extensible Enumeration] Subordinated notes and debentures   Subordinated notes and debentures   Subordinated notes and debentures
Fair Value Hedges | Minimum          
Derivatives, Fair Value [Line Items]          
Derivative liabilities, Receive Rate 3.07%   3.07%    
Fair Value Hedges | Maximum          
Derivatives, Fair Value [Line Items]          
Derivative liabilities, Receive Rate 3.56%   3.56%    
Cash Flow Hedges | Variable rate loans          
Derivatives, Fair Value [Line Items]          
Derivative liabilities, Notional $ 1,000,000   $ 1,000,000   $ 1,000,000
Derivative liabilities, Fair Value (16,022)   (16,022)   (919)
Net Change in Other Comprehensive Income (Loss) $ (8,060) 0 $ (15,102) 0  
Cash Flow Hedges | Variable rate loans | Minimum          
Derivatives, Fair Value [Line Items]          
Derivative liabilities, Receive Rate 3.18%   3.18%    
Cash Flow Hedges | Variable rate loans | Maximum          
Derivatives, Fair Value [Line Items]          
Derivative liabilities, Receive Rate 4.05%   4.05%    
Cash Flow Hedges | Variable rate commercial MBS          
Derivatives, Fair Value [Line Items]          
Derivative liabilities, Notional $ 300,000   $ 300,000   300,000
Derivative liabilities, Fair Value (1,673)   (1,673)   317
Net Change in Other Comprehensive Income (Loss) $ (776) $ 0 $ (1,990) $ 0  
Cash Flow Hedges | Variable rate commercial MBS | Minimum          
Derivatives, Fair Value [Line Items]          
Derivative liabilities, Receive Rate 3.07%   3.07%    
Cash Flow Hedges | Variable rate commercial MBS | Maximum          
Derivatives, Fair Value [Line Items]          
Derivative liabilities, Receive Rate 3.82%   3.82%    
Interest Rate Swap          
Derivatives, Fair Value [Line Items]          
Derivative assets, notional amount $ 1,505,189   $ 1,505,189   1,190,958
Derivative assets, fair value 19,208   19,208   26,734
Derivative liabilities, Notional 1,506,072   1,506,072   1,191,858
Derivative liabilities, Fair Value $ (19,148)   $ (19,148)   $ (26,682)