Derivative Instruments and Hedging Activities - Schedule of Gross Amounts of Derivative Assets and Derivative Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Derivative Assets (Included in Other Assets)
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Notional Amount	$ 866,676	$ 892,712
Derivative financial assets	$ 45,754	$ 63,018
Derivative Liabilities (Included in Other Liabilities)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Notional Amount	$ 1,364,443	$ 1,392,712
Derivative financial liabilities	53,271	78,293
Interest rate swap contracts—commercial loans
Derivative Assets (Included in Other Assets)
Derivative financial assets	45,690	63,018
Derivative Liabilities (Included in Other Liabilities)
Derivative financial liabilities	53,271	78,293
Designated as Hedging Instruments
Derivative Assets (Included in Other Assets)
Notional Amount	0	0
Derivative financial assets	0	0
Derivative Liabilities (Included in Other Liabilities)
Notional Amount	500,000	500,000
Derivative financial liabilities	7,115	14,739
Designated as Hedging Instruments | Cash Flow Hedge
Derivative Assets (Included in Other Assets)
Notional Amount	0	0
Derivative financial assets	0	0
Derivative Liabilities (Included in Other Liabilities)
Notional Amount	500,000	500,000
Derivative financial liabilities	7,115	14,739
Not Designated as Hedging Instruments
Derivative Assets (Included in Other Assets)
Notional Amount	866,676	892,712
Derivative financial assets	45,754	63,018
Derivative Liabilities (Included in Other Liabilities)
Notional Amount	864,443	892,712
Derivative financial liabilities	46,156	63,554
Not Designated as Hedging Instruments | Interest rate swap contracts—commercial loans
Derivative Assets (Included in Other Assets)
Notional Amount	864,443	892,712
Derivative financial assets	45,690	63,018
Derivative Liabilities (Included in Other Liabilities)
Notional Amount	864,443	892,712
Derivative financial liabilities	46,156	63,554
Not Designated as Hedging Instruments | Interest rate lock commitments - mortgage loans
Derivative Assets (Included in Other Assets)
Notional Amount	2,233	0
Derivative financial assets	64	0
Derivative Liabilities (Included in Other Liabilities)
Notional Amount	0	0
Derivative financial liabilities	$ 0	$ 0