Investment Securities - Additional Information (Details)	6 Months Ended
Jun. 30, 2025 USD ($) position	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) position
Investments, Debt and Equity Securities [Abstract]
Equity securities	$ 77,408,000		$ 71,513,000
Accrued interest on investments available for sale	$ 15,400,000		$ 13,100,000
Number of security positions in the debt securities available for sale portfolio in an unrealized loss position \| position	661		726
Fair value of debt securities available for sale pledged as collateral	$ 1,000,000,000.0
Weighted-average remaining expected life of residential mortgage-backed securities available for sale, years	8 years 4 months 20 days
Impairment loss	$ 0	$ 0
Allowance for credit losses for available for sale debt securities	0		$ 0
Accrued interest on securities held to maturity	$ 13,000,000		$ 13,000,000
Number of security positions in the securities held to maturity portfolio in an unrealized loss position \| position	737		798
Fair value of investments held to maturity pledged as collateral	$ 1,200,000,000
Weighted-average remaining expected life of residential mortgage-backed securities held to maturity, years	9 years 1 month 17 days
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable		Accrued interest receivable
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable		Accrued interest receivable

Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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