Available for Sale Debt Securities - Narrative (Details)	12 Months Ended
Dec. 31, 2024 USD ($) position	Dec. 31, 2023 USD ($) position	Dec. 31, 2022 USD ($)
Debt Securities, Available-for-sale [Line Items]
Accrued interest on available for sale debt securities	$ 9,700,000	$ 4,900,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable	Accrued interest receivable
Securities available for sale at carrying value	$ 863,900,000	$ 1,130,000,000
Debt securities, available for sale, without single maturity date, amortized cost	2,340,000,000
Debt securities, available for sale, without single maturity date, fair value	2,160,000,000
Proceeds from sales of securities available for sale	566,942,000	0	$ 0
Proceeds from sale of debt securities, available for sale, gross	569,900,000
Gain recognized on sale of securities	0
Loss recognized on sale of securities	3,000,000
Proceeds from calls of available for sale securities	780,000	2,300,000
Gain recognized on proceeds from calls on sale of securities	0	0
Loss recognized on proceeds from calls on sale of securities	$ 0	$ 0
Securities available for sale, number of securities in an unrealized loss position \| position	646	436
Lakeland Bancorp, Inc. - Merger Agreement
Debt Securities, Available-for-sale [Line Items]
Loss recognized on sale of securities	$ 2,800,000

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