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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, 2023 | Dec. 31, 2022
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Securities held to maturity | $ 10,848 | $ 11,970
Carrying Value | Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cash and cash equivalents | 280,441 | 358,972
Carrying Value | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Non-marketable equity securities held in other financial institutions | 55,190 | 67,378
GNMA repurchase asset | 0 | 24,569
Accrued interest and loan fees receivable | 41,688 | 38,136
Deposits | 8,251,125 | 7,775,702
FHLB advances and other borrowings | 83,598 | 639,230
Subordinated indebtedness | 194,279 | 201,765
Accrued interest payable | 12,272 | 3,917
Carrying Value | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Securities held to maturity | 11,615 | 11,275
LHFI, net | 7,564,076 | 7,002,861
Estimated Fair Value | Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cash and cash equivalents | 280,441 | 358,972
Estimated Fair Value | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Non-marketable equity securities held in other financial institutions | 55,190 | 67,378
GNMA repurchase asset | 0 | 24,569
Accrued interest and loan fees receivable | 41,688 | 38,136
Deposits | 8,240,520 | 7,753,966
FHLB advances and other borrowings | 83,187 | 639,103
Subordinated indebtedness | 186,251 | 181,624
Accrued interest payable | 12,272 | 3,917
Estimated Fair Value | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Securities held to maturity | 10,848 | 11,970
LHFI, net | $ 7,177,720 | $ 6,835,770

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- Definition Accrued Fees and Other Revenue Receivable, Fair Value + References No definition available. + Details
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- Definition Federal Home Loan Bank Advances and Securities Sold Under Agreements to Repurchase, Fair Value + References No definition available. + Details
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- Definition Government National Mortgage Association Repurchase Asset + References No definition available. + Details
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- Definition Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust, Fair Value + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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