XML 106 R87.htm IDEA: XBRL DOCUMENT
v3.25.0.1

OTHER BORROWINGS - Schedule of Other Borrowings (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |
Subordinated deferrable interest debentures, net | $ 132,309 | $ 130,315
Other borrowings | 291,788 | 509,586
Fixed Rate Advance due January 10, 2024; fixed interest rate of 5.450% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 0 | 50,000
Debt instrument, interest rate, effective percentage (as a percent) | 5.45% |
Fixed Rate Advance due January 17, 2024; fixed interest rate of 5.460% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 0 | 100,000
Debt instrument, interest rate, effective percentage (as a percent) | 5.46% |
Fixed Rate Advance due January 21, 2025; fixed interest rate of 4.430% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 50,000 | 0
Debt instrument, interest rate, effective percentage (as a percent) | 4.43% |
Fixed Rate Advance due March 3, 2025; fixed interest rate of 1.208% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 15,000 | 15,000
Debt instrument, interest rate, effective percentage (as a percent) | 1.208% |
Fixed Rate Advance due March 2, 2027; fixed interest rate of 1.445% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 15,000 | 15,000
Debt instrument, interest rate, effective percentage (as a percent) | 1.445% |
Fixed Rate Advance due March 4, 2030; fixed interest rate of 1.606% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 15,000 | 15,000
Debt instrument, interest rate, effective percentage (as a percent) | 1.606% |
Fixed Rate Advance due December 9, 2030; fixed interest rate of 4.550% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 1,366 | 1,378
Debt instrument, interest rate, effective percentage (as a percent) | 4.55% |
Fixed Rate Advance due December 9, 2030; fixed interest rate of 4.550% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 946 | 954
Debt instrument, interest rate, effective percentage (as a percent) | 4.55% |
Principal Reducing Advance due September 29, 2031; fixed interest rate of 3.095% |  |
Debt Instrument [Line Items] |  |
Advance from correspondent bank | $ 984 | 1,128
Debt instrument, interest rate, effective percentage (as a percent) | 3.095% |
Subordinated notes payable due December 15, 2029 net of unamortized debt issuance cost of $0 and $1,296, respectively; fixed interest rate of 4.25% through December 14, 2024; variable interest rate thereafter at three-month SOFR plus 2.94% (2029 subordinated notes) |  |
Debt Instrument [Line Items] |  |
Subordinated deferrable interest debentures, net | $ 0 | 106,704
Debt instrument, interest rate, effective percentage (as a percent) | 4.25% |
Unamortized debt issuance expense | $ 0 | 1,296
Subordinated notes payable due December 15, 2029 net of unamortized debt issuance cost of $0 and $1,296, respectively; fixed interest rate of 4.25% through December 14, 2024; variable interest rate thereafter at three-month SOFR plus 2.94% (2029 subordinated notes) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.94% |
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $653 and $784, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% (Bank subordinated notes) (1) |  |
Debt Instrument [Line Items] |  |
Subordinated deferrable interest debentures, net | $ 74,653 | 75,784
Debt instrument, interest rate, effective percentage (as a percent) | 5.875% |
Unaccreted purchase accounting fair value adjustment | $ (653) | (784)
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $653 and $784, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% (Bank subordinated notes) (1) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 3.63% |
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $653 and $784, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% (Bank subordinated notes) (1) | London Interbank Offered Rate (LIBOR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 3.63% |
Subordinated notes payable due October 1, 2030 net of unamortized debt issuance cost of $1,161 and $1,362, respectively; fixed interest rate of 3.875% through September 30, 2025; variable interest rate thereafter at three-month SOFR plus 3.753% (2030 subordinated notes) |  |
Debt Instrument [Line Items] |  |
Subordinated deferrable interest debentures, net | $ 108,839 | 108,638
Debt instrument, interest rate, effective percentage (as a percent) | 3.875% |
Unamortized debt issuance expense | $ 1,161 | 1,362
Subordinated notes payable due October 1, 2030 net of unamortized debt issuance cost of $1,161 and $1,362, respectively; fixed interest rate of 3.875% through September 30, 2025; variable interest rate thereafter at three-month SOFR plus 3.753% (2030 subordinated notes) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 3.753% |
Advance from correspondent bank due November 28, 2024; secured by a loan receivable; variable interest rate at one-month SOFR plus 2.50% |  |
Debt Instrument [Line Items] |  |
Other borrowings | $ 0 | 10,000
Advance from correspondent bank due November 28, 2024; secured by a loan receivable; variable interest rate at one-month SOFR plus 2.50% | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.50% |
Advance from correspondent bank due December 1, 2025; secured by a loan receivable; variable interest rate at one-month SOFR plus 2.65% |  |
Debt Instrument [Line Items] |  |
Other borrowings | $ 10,000 | $ 10,000
Advance from correspondent bank due December 1, 2025; secured by a loan receivable; variable interest rate at one-month SOFR plus 2.65% | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.65% |

X
- Definition Advance from correspondent bank with a fixed interest rate of 4.50%, due November 27, 2017, secured by subsidiary bank loan receivable. + References No definition available. + Details
Name: | abcb_AdvancesFromCorrespondentBank
Namespace Prefix: | abcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unaccreted Portion Of Fair Value Adjustment Net + References No definition available. + Details
Name: | abcb_UnaccretedPortionOfFairValueAdjustmentNet
Namespace Prefix: | abcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 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(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-6 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69E Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69F -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69F Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1I -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I Reference 26: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 Reference 27: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity. + References Reference 1: 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 2: 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(13)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_OtherBorrowings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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
Name: | us-gaap_SubordinatedDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References No definition available. + Details
Name: | us-gaap_UnamortizedDebtIssuanceExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_FixedRateAdvanceTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_FixedRateAdvanceTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_FixedRateAdvanceTwentySixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_FixedRateAdvanceTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_FixedRateAdvanceTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_FixedRateAdvanceTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_FixedRateAdvanceThirtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_FixedRateAdvanceThirtyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_PrincipalReducingAdvanceOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_SubordinatedDebtOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_SubordinatedDebtTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=abcb_LondonInterbankOfferedRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_SubordinatedDebtThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_AdvanceFromCorrespondentBankOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abcb_AdvanceFromCorrespondentBankTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |