XML 117 R99.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Commitments and Off-balance Sheet Items (Commitments and Contingencies) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Commitment to Sell Loans, Mandatory |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | $ 0 | $ 0
Variable Rate | 0 | 0
Commitment to Sell Loans, Non-Mandatory |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 5,992 | 8,731
Variable Rate | 0 | 0
Standby Letters of Credit |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 3,340 | 3,047
Variable Rate | 16,161 | 17,117
Commitment to Fund Loans |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 146,185 | 191,425
Variable Rate | 1,238,832 | 1,193,468
Consumer Lines | Commitment to Fund Loans |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 13,978 | 15,238
Variable Rate | 689,295 | 576,784
Commercial Operating Lines | Commitment to Fund Loans |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 120,352 | 161,058
Variable Rate | 546,016 | 611,357
Residential Mortgages | Commitment to Fund Loans |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 11,855 | 15,129
Variable Rate | $ 3,521 | $ 5,327

X
- References No definition available. + Details
Name: | gabc_CommitmentsAndContingentLiabilitiesLineItems
Namespace Prefix: | gabc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480981/942-825-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480981/942-825-50-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at interest rates that increase or decrease depending on certain facts or circumstances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480981/942-825-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480981/942-825-50-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableCommitmentsVariableRates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=gabc_CommitmenttoSellLoansMandatoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=gabc_CommitmenttoSellLoansNonMandatoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |