v3.25.2
Derivatives and Hedging Activities - Derivatives (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Cumulative basis adjustments for fair value hedges          
Amortized cost of the Hedged Assets $ 2,966,121   $ 2,966,121   $ 3,242,878
Hedged Asset, Statement of Financial Position [Extensible Enumeration] Fair Value   Fair Value   Fair Value
Amortized Cost of Fair Value Hedging Included in the Carrying Amount of the Hedged Assets $ (4,086)   $ (4,086)   $ (9,287)
Interest rate swap          
Notional and estimated fair value amount of derivative positions          
Notional Amount 1,630,500   1,630,500   1,630,500
Asset Derivative 4,086   4,086   9,287
Liability Derivative $ 0   $ 0   $ 0
Remaining Maturity     8 months 12 days   1 year 2 months 12 days
Pay Rate 3.68%   3.68%   3.68%
Interest rate swap | Interest income on investment securities          
Fair value hedge relationships on the income statement          
Gain (loss) on fair value hedges recognized in earnings $ 1,810 $ 6,358 $ 351 $ 25,958  
Debt securities available-for-sale | Interest income on investment securities          
Fair value hedge relationships on the income statement          
Gain (loss) on fair value hedges recognized in earnings $ (9,358) $ (3,520) $ (5,201) $ (20,297)