Fair Value of Financial Instruments - Carrying Value and Estimated Fair Values of Financial Instruments Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	$ 10,456	$ 10,848
Carrying Value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	470,249	280,441
Carrying Value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-marketable equity securities held in other financial institutions	71,643	55,190
Accrued interest and loan fees receivable	38,901	41,688
Deposits	8,223,120	8,251,125
FHLB advances, repurchase agreements and other borrowings	12,460	83,598
Subordinated indebtedness	159,943	194,279
Accrued interest payable	8,033	12,272
Carrying Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	11,095	11,615
LHFI, net	7,482,653	7,564,076
Estimated Fair Value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	470,249	280,441
Estimated Fair Value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-marketable equity securities held in other financial institutions	71,643	55,190
Accrued interest and loan fees receivable	38,901	41,688
Deposits	8,217,564	8,240,520
FHLB advances, repurchase agreements and other borrowings	12,203	83,187
Subordinated indebtedness	159,928	186,251
Accrued interest payable	8,033	12,272
Estimated Fair Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	10,456	10,848
LHFI, net	$ 7,209,866	$ 7,177,720

Accrued Fees and Other Revenue Receivable, Fair Value

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- Definition

Federal Home Loan Bank Advances and Securities Sold Under Agreements to Repurchase, Fair Value

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- Definition

Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust, Fair Value

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- Definition

Loans and Leases Receivable, Net of Deferred Income, Fair Value Disclosure

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No definition available.

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- Definition

Other Investments, Fair Value

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- Definition

Fair value portion of accrued expenses.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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