XML 63 R51.htm IDEA: XBRL DOCUMENT
v3.25.1

OTHER BORROWINGS - Schedule of Other Borrowings (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Other Borrowings [Line Items] |  |
Subordinated deferrable interest debentures | $ 132,807 | $ 132,309
Other borrowings | 276,744 | 291,788
Fixed Rate Advance due January 21, 2025; fixed interest rate of 4.430% |  |
Other Borrowings [Line Items] |  |
Advance from correspondent bank | $ 0 | 50,000
Debt instrument, interest rate, effective percentage | 4.43% |
Fixed Rate Advance due March 3, 2025; fixed interest rate of 1.208% |  |
Other Borrowings [Line Items] |  |
Advance from correspondent bank | $ 0 | 15,000
Debt instrument, interest rate, effective percentage | 1.208% |
Fixed Rate Advance due April 25, 2025; fixed interest rate of 4.420% |  |
Other Borrowings [Line Items] |  |
Advance from correspondent bank | $ 50,000 | 0
Debt instrument, interest rate, effective percentage | 4.42% |
Fixed Rate Advance due March 2, 2027; fixed interest rate of 1.445% |  |
Other Borrowings [Line Items] |  |
Advance from correspondent bank | $ 15,000 | 15,000
Debt instrument, interest rate, effective percentage | 1.445% |
Fixed Rate Advance due March 4, 2030; fixed interest rate of 1.606% |  |
Other Borrowings [Line Items] |  |
Advance from correspondent bank | $ 15,000 | 15,000
Debt instrument, interest rate, effective percentage | 1.606% |
Fixed Rate Advance due December 9, 2030; fixed interest rate of 4.550% |  |
Other Borrowings [Line Items] |  |
Advance from correspondent bank | $ 1,363 | 1,366
Debt instrument, interest rate, effective percentage | 4.55% |
Fixed Rate Advance due December 9, 2030; fixed interest rate of 4.550% |  |
Other Borrowings [Line Items] |  |
Advance from correspondent bank | $ 944 | 946
Debt instrument, interest rate, effective percentage | 4.55% |
Principal Reducing Advance due September 29, 2031; fixed interest rate of 3.095% |  |
Other Borrowings [Line Items] |  |
Advance from correspondent bank | $ 947 | 984
Debt instrument, interest rate, effective percentage | 3.095% |
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $623 and $653, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% |  |
Other Borrowings [Line Items] |  |
Subordinated deferrable interest debentures | $ 74,623 | 74,653
Debt instrument, interest rate, effective percentage | 5.875% |
Unaccreted purchase accounting fair value adjustment | $ 623 | 653
Basis spread on variable rate | 3.63% |
Subordinated notes payable due October 1, 2030 net of unamortized debt issuance cost of $1,110 and $1,161, respectively; fixed interest rate of 3.875% through September 30, 2025; variable interest rate thereafter at three-month SOFR plus 3.753% |  |
Other Borrowings [Line Items] |  |
Subordinated deferrable interest debentures | $ 108,890 | 108,839
Debt instrument, interest rate, effective percentage | 3.875% |
Basis spread on variable rate | 3.753% |
Unamortized debt issuance expense | $ 1,110 | 1,161
Advance from correspondent bank due December 1, 2025; secured by a loan receivable; variable interest rate at one-month SOFR plus 2.65% |  |
Other Borrowings [Line Items] |  |
Other borrowings | $ 9,977 | $ 10,000
Basis spread on variable rate | 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
- References No definition available. + Details
Name: | abcb_OtherBorrowingsLineItems
Namespace Prefix: | abcb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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 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_FixedRateAdvanceOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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