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Subordinated Debentures - Additional Information (Detail) - USD ($) $ in Thousands |  | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 30, 2021 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 17, 2007 | Mar. 23, 2007 | Jun. 15, 2005 | Sep. 20, 2004 | Mar. 26, 2003
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Subordinated debentures |  | $ 104,089 | $ 103,943 |  |  |  |  |
Investment in common stock of trust |  |  |  |  |  | $ 148 |  |
Futura Ban Corp [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Subordinated debentures |  |  |  | $ 4,700 |  |  |  |
Subordinated Note Purchase Agreement [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Aggregate Principal Amount | $ 75,000 |  |  |  |  |  |  |
Debt, variable interest rate |  | 2.19% |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |  |  |
Subordinated debenture, maturity date | Dec. 31, 2031 |  |  |  |  |  |  |
Subordinated debenture, maturity year | 2031 |  |  |  |  |  |  |
Debt instrument, variable interest rate percentage | 3.25% |  |  |  |  |  |  |
Subordinated Debentures [Member] | Futura Ban Corp [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Acquisition fair value |  |  |  | $ 4,600 |  |  |  |
Senior Subordinated Notes [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Redemption Price Percentage |  | 100.00% |  |  |  |  |  |
First Citizens Statutory Trust III [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Subordinated debentures |  | $ 12,887 | $ 12,887 |  |  |  | $ 12,900 |
Investment in common stock of trust |  |  |  |  |  |  | $ 387 |
Debt, variable interest rate |  | 2.25% |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |  |  |
Debt instrument, variable interest rate percentage |  | 7.32% | 7.91% |  |  |  |  |
First Citizens Statutory Trust II [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Subordinated debentures |  | $ 7,732 | $ 7,732 |  |  |  |  | $ 7,700
Investment in common stock of trust |  |  |  |  |  |  |  | $ 232
Debt, variable interest rate |  | 3.15% |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |  |  |
Debt instrument, variable interest rate percentage |  | 8.07% | 8.81% |  |  |  |  |
First Citizens Statutory Trust IV [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Subordinated debentures |  | $ 5,155 | $ 5,155 |  | $ 5,200 |  |  |
Investment in common stock of trust |  |  |  |  | $ 155 |  |  |
Debt, variable interest rate |  | 1.60% |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |  |  |
Debt instrument, variable interest rate percentage |  | 6.81% | 7.27% |  |  |  |  |
Futura TPF Trust II [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Subordinated debentures |  | $ 1,997 | $ 1,997 |  |  | 2,100 |  |
Debt, variable interest rate |  | 1.66% |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |  |  |
Debt instrument, variable interest rate percentage |  | 6.87% | 7.33% |  |  |  |  |
Futura TPF Trust I [Member] |  |  |  |  |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |  |  |  |  |
Subordinated debentures |  | $ 2,578 | $ 2,578 |  |  | $ 2,600 |  |
Debt, variable interest rate |  | 1.66% |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |  |  |
Debt instrument, variable interest rate percentage |  | 6.87% | 7.33% |  |  |  |  |

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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