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v3.24.0.1

Line of Credit - Additional Information (Detail) | Dec. 31, 2023 USD ($)
--- | ---
Debt Instrument [Line Items] |
Maximum drawing capacity | $ 793,300,000
FHLB stock holdings | 658,300
Advances outstanding | 0
Federal reserve discount window capacity | 26,300,000
Brokered certificate of deposit capacity | 72,100,000
BancFirst [Member] |
Debt Instrument [Line Items] |
Advances outstanding | 0
Worthington [Member] |
Debt Instrument [Line Items] |
Advances outstanding | 0
Residential Mortgage [Member] |
Debt Instrument [Line Items] |
Line of credit assets pledged as collateral | 1,100,000,000
Federal Home Loan Bank [Member] |
Debt Instrument [Line Items] |
Maximum drawing capacity | 75,200,000
Revolving Line of Credit Member] | BancFirst [Member] |
Debt Instrument [Line Items] |
Maximum drawing capacity | 25,000,000
Revolving Line of Credit Member] | Worthington [Member] |
Debt Instrument [Line Items] |
Maximum drawing capacity | $ 10,500,000

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