Derivative Instruments - Schedule of Notional and Fair Value Amounts of Derivative Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Derivatives, Fair Value [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ (4,648)	$ (37,558)	$ (38,047)	$ (24,975)
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	63,946		63,946		103,366
Derivative liabilities, Notional	325,000		325,000		0
Derivative liabilities, Fair Value	(2,274)		(2,274)		0
Carrying Amount of Hedged Assets	968,514		968,514		934,132
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of Hedged Assets	$ 64,170		$ 64,170		$ 103,595
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	$ 318,976		$ 318,976		$ 0
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of Hedged Liabilities	$ (2,274)		$ (2,274)		$ 0
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 assets, notional amount	$ 1,000,000		$ 1,000,000		$ 0
Derivative assets, fair value	1,216		1,216		0
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ 1,216	0	$ 1,216	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 assets, notional amount	$ 300,000		$ 300,000		0
Derivative assets, fair value	162		162		0
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ 162	$ 0	$ 162	$ 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	$ 999,054		$ 999,054		748,752
Derivative assets, fair value	32,119		32,119		24,108
Derivative liabilities, Notional	999,961		999,961		749,683
Derivative liabilities, Fair Value	$ (33,089)		$ (33,089)		$ (24,032)