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v3.24.2

Borrowing Arrangements Narrative (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 USD ($) oustanding_letters_of_credit credit_line | Jun. 30, 2024 USD ($) oustanding_letters_of_credit credit_line | Dec. 31, 2023 USD ($)
Line of Credit Facility [Line Items] |  |  |
Number of credit lines maintained by the Company | credit_line | 3 | 3 |
Federal funds purchased | $ 0 | $ 0 | $ 0
Letters of Credit, Federal Home Loan Bank, as collateral | 0 | $ 0 |
Maturity of repurchase agreements (less than) |  | 1 year 2 months 12 days |
Securities sold under repurchase agreements | 88,000,000.0 | $ 88,000,000.0 | 92,100,000
Federal Home Loan Bank borrowings, additional funding available | 1,780,000,000 | 1,780,000,000 |
Asset Pledged As Collateral, Excess Amount |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt Securities | 377,400,000 | 377,400,000 | 213,100,000
Frost Bank |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of credit, maximum borrowing capacity | 40,000,000.0 | 40,000,000.0 |
Line of credit, capacity available for issuance of letters of credit | $ 5,000,000.0 | $ 5,000,000.0 |
Number of outstanding letters of credit | oustanding_letters_of_credit | 1 | 1 |
Letters of Credit Outstanding, Amount | $ 155,000 | $ 155,000 |
TIB - The Independent Bankers Bank |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of credit, maximum borrowing capacity | 15,000,000.0 | 15,000,000.0 |
Amegy Bank |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of credit, maximum borrowing capacity | $ 25,000,000.0 | $ 25,000,000.0 |
Minimum |  |  |
Line of Credit Facility [Line Items] |  |  |
Federal Home Loan Bank borrowings interest rates | 0.62% | 0.62% |
Federal Home Loan Bank borrowings maturities |  | 1 day |
Maximum |  |  |
Line of Credit Facility [Line Items] |  |  |
Federal Home Loan Bank borrowings interest rates | 5.38% | 5.38% |
Federal Home Loan Bank borrowings maturities |  | 4 years |
Federal Reserve Discount Window |  |  |
Line of Credit Facility [Line Items] |  |  |
Other borrowings | $ 0 | $ 0 | $ 300,000,000.0
Federal Reserve Bank Term Funding Program |  |  |
Line of Credit Facility [Line Items] |  |  |
Other borrowings | $ 113,400,000 | $ 113,400,000 |
BTFP borrowings maturities (less than) | 1 year |  |

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