Investment Securities - Narrative (Details)	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($)
Debt and Equity Securities, FV-NI [Line Items]
Accrued interest receivable	$ 49,611,000	$ 52,715,000
Trade date receivables settled after period end	0	0
Trade date payables settled after period end		0
Allowance for credit losses on investments	$ 0	$ 0
Number of securities in securities portfolio | security	271	439
Number of securities in securities portfolio, unrealized loss position | security	248	370
Equity securities without a readily determinable market value	$ 23,459,000	$ 25,191,000
Federal home loan bank stock	32,749,000	34,190,000
Equity method investment (See Note 2)	19,970,000	10,000,000
Goodwill	242,561,000	242,561,000	$ 242,561,000
Equity Method Investments
Debt and Equity Securities, FV-NI [Line Items]
Goodwill	17,103,000
Collateral Pledged
Debt and Equity Securities, FV-NI [Line Items]
Securities pledged	937,043,000	929,546,000
Debt Securities
Debt and Equity Securities, FV-NI [Line Items]
Accrued interest receivable	$ 6,401,000	$ 7,212,000