XML 62 R51.htm IDEA: XBRL DOCUMENT
v3.21.1

Loans (Collateral-dependent Loans by Class) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | $ 3,120,981 | $ 3,091,998 |  | $ 3,081,973
Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 20,689 | 21,121 |  |
Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 2,846 | 3,018 |  |
Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 639 | 669 |  |
Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 1,505 | 1,687 |  |
Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 25,679 | 26,495 |  |
Commercial and Industrial Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 672,300 | 638,773 | $ 534,692 | 589,758
Commercial and Industrial Loans | Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 4,350 | 4,943 |  |
Commercial and Industrial Loans | Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 2,846 | 3,014 |  |
Commercial and Industrial Loans | Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 639 | 669 |  |
Commercial and Industrial Loans | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 30 | 154 |  |
Commercial and Industrial Loans | Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 7,865 | 8,780 |  |
Commercial Real Estate Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 1,492,617 | 1,467,397 | 1,500,247 | 1,495,862
Commercial Real Estate Loans | Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 11,629 | 11,877 |  |
Commercial Real Estate Loans | Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Commercial Real Estate Loans | Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Commercial Real Estate Loans | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 1,472 | 1,530 |  |
Commercial Real Estate Loans | Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 13,101 | 13,407 |  |
Agricultural Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 347,231 | 376,186 | 384,654 | 384,526
Agricultural Loans | Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 2,980 | 3,064 |  |
Agricultural Loans | Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Agricultural Loans | Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Agricultural Loans | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Agricultural Loans | Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 2,980 | 3,064 |  |
Leases |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 55,714 | 55,664 | 57,257 |
Leases | Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Leases | Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Leases | Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Leases | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Leases | Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Home Equity Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 212,306 | 219,348 | 225,790 | 225,755
Home Equity Loans | Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 406 | 416 |  |
Home Equity Loans | Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Home Equity Loans | Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Home Equity Loans | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Home Equity Loans | Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 406 | 416 |  |
Consumer Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 60,570 | 66,717 | 69,264 | 81,217
Consumer Loans | Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 4 | 4 |  |
Consumer Loans | Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 4 |  |
Consumer Loans | Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Consumer Loans | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 3 | 3 |  |
Consumer Loans | Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 7 | 11 |  |
Credit Cards |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 12,609 | 11,637 | 11,953 |
Credit Cards | Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Credit Cards | Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Credit Cards | Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Credit Cards | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Credit Cards | Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Residential Mortgage Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 267,634 | 256,276 | $ 305,002 | $ 304,855
Residential Mortgage Loans | Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 1,320 | 817 |  |
Residential Mortgage Loans | Equipment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Residential Mortgage Loans | Accounts Receivable |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Residential Mortgage Loans | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | 0 | 0 |  |
Residential Mortgage Loans | Total |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total | $ 1,320 | $ 817 |  |

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 No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before allowance for credit loss and fee, of financing receivable. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=gabc_OtherCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_CollateralPledgedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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

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