XML 61 R51.htm IDEA: XBRL DOCUMENT
v3.23.3

Loans - Risk Category of Loans by Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Total | $ 3,893,573 |  | $ 3,893,573 |  | $ 3,788,645
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
Total | 650 | $ 820 | 2,737 | $ 1,636 |
Commercial and Industrial Loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 88,427 |  | 88,427 |  | 158,088
2022-2021 | 141,517 |  | 141,517 |  | 123,425
2021-2020 | 92,978 |  | 92,978 |  | 41,375
2020-2019 | 33,096 |  | 33,096 |  | 47,887
2019-2018 | 38,414 |  | 38,414 |  | 20,002
Prior | 54,780 |  | 54,780 |  | 56,065
Revolving Loans Amortized Cost Basis | 149,681 |  | 149,681 |  | 173,264
Total | 598,893 |  | 598,893 |  | 620,106
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
2023 |  |  | 0 |  |
2022 |  |  | 911 |  |
2021 |  |  | 32 |  |
2020 |  |  | 33 |  |
2019 |  |  | 7 |  |
Prior |  |  | 88 |  |
Revolving Loans Amortized Cost Basis |  |  | 181 |  |
Total | 175 | 238 | 1,252 | 299 |
Commercial and Industrial Loans | Pass |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 88,379 |  | 88,379 |  | 156,318
2022-2021 | 140,656 |  | 140,656 |  | 117,648
2021-2020 | 86,196 |  | 86,196 |  | 39,949
2020-2019 | 30,700 |  | 30,700 |  | 46,505
2019-2018 | 36,656 |  | 36,656 |  | 18,423
Prior | 51,279 |  | 51,279 |  | 51,482
Revolving Loans Amortized Cost Basis | 136,528 |  | 136,528 |  | 154,203
Total | 570,394 |  | 570,394 |  | 584,528
Commercial and Industrial Loans | Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 48 |  | 48 |  | 56
2022-2021 | 470 |  | 470 |  | 148
2021-2020 | 498 |  | 498 |  | 577
2020-2019 | 1,609 |  | 1,609 |  | 78
2019-2018 | 642 |  | 642 |  | 551
Prior | 1,991 |  | 1,991 |  | 2,346
Revolving Loans Amortized Cost Basis | 5,843 |  | 5,843 |  | 1,672
Total | 11,101 |  | 11,101 |  | 5,428
Commercial and Industrial Loans | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 1,714
2022-2021 | 391 |  | 391 |  | 5,629
2021-2020 | 6,284 |  | 6,284 |  | 849
2020-2019 | 787 |  | 787 |  | 1,304
2019-2018 | 1,116 |  | 1,116 |  | 1,028
Prior | 1,510 |  | 1,510 |  | 2,237
Revolving Loans Amortized Cost Basis | 7,310 |  | 7,310 |  | 17,389
Total | 17,398 |  | 17,398 |  | 30,150
Commercial and Industrial Loans | Doubtful |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 0
2022-2021 | 0 |  | 0 |  | 0
2021-2020 | 0 |  | 0 |  | 0
2020-2019 | 0 |  | 0 |  | 0
2019-2018 | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 0 |  | 0 |  | 0
Commercial Real Estate Loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 231,679 |  | 231,679 |  | 402,613
2022-2021 | 426,667 |  | 426,667 |  | 496,943
2021-2020 | 490,433 |  | 490,433 |  | 266,563
2020-2019 | 232,637 |  | 232,637 |  | 164,251
2019-2018 | 151,699 |  | 151,699 |  | 143,819
Prior | 507,347 |  | 507,347 |  | 457,532
Revolving Loans Amortized Cost Basis | 36,500 |  | 36,500 |  | 35,163
Total | 2,076,962 |  | 2,076,962 |  | 1,966,884
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
2023 |  |  | 0 |  |
2022 |  |  | 0 |  |
2021 |  |  | 56 |  |
2020 |  |  | 0 |  |
2019 |  |  | 0 |  |
Prior |  |  | 0 |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Total | 56 | 1 | 56 | 79 |
Commercial Real Estate Loans | Pass |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 218,088 |  | 218,088 |  | 398,631
2022-2021 | 424,293 |  | 424,293 |  | 490,747
2021-2020 | 473,834 |  | 473,834 |  | 261,462
2020-2019 | 227,014 |  | 227,014 |  | 162,701
2019-2018 | 150,687 |  | 150,687 |  | 129,151
Prior | 482,924 |  | 482,924 |  | 427,433
Revolving Loans Amortized Cost Basis | 36,185 |  | 36,185 |  | 35,163
Total | 2,013,025 |  | 2,013,025 |  | 1,905,288
Commercial Real Estate Loans | Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 13,591 |  | 13,591 |  | 3,982
2022-2021 | 2,171 |  | 2,171 |  | 1,568
2021-2020 | 11,239 |  | 11,239 |  | 4,612
2020-2019 | 4,471 |  | 4,471 |  | 135
2019-2018 | 264 |  | 264 |  | 13,689
Prior | 21,051 |  | 21,051 |  | 25,371
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 52,787 |  | 52,787 |  | 49,357
Commercial Real Estate Loans | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 0
2022-2021 | 203 |  | 203 |  | 4,628
2021-2020 | 5,360 |  | 5,360 |  | 489
2020-2019 | 1,152 |  | 1,152 |  | 1,415
2019-2018 | 748 |  | 748 |  | 979
Prior | 3,372 |  | 3,372 |  | 4,728
Revolving Loans Amortized Cost Basis | 315 |  | 315 |  | 0
Total | 11,150 |  | 11,150 |  | 12,239
Commercial Real Estate Loans | Doubtful |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 0
2022-2021 | 0 |  | 0 |  | 0
2021-2020 | 0 |  | 0 |  | 0
2020-2019 | 0 |  | 0 |  | 0
2019-2018 | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 0 |  | 0 |  | 0
Agricultural Loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 35,565 |  | 35,565 |  | 63,307
2022-2021 | 58,777 |  | 58,777 |  | 48,734
2021-2020 | 41,871 |  | 41,871 |  | 54,049
2020-2019 | 47,949 |  | 47,949 |  | 30,009
2019-2018 | 25,497 |  | 25,497 |  | 24,168
Prior | 119,841 |  | 119,841 |  | 108,974
Revolving Loans Amortized Cost Basis | 68,609 |  | 68,609 |  | 88,172
Total | 398,109 |  | 398,109 |  | 417,413
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
2023 |  |  | 0 |  |
2022 |  |  | 0 |  |
2021 |  |  | 0 |  |
2020 |  |  | 2 |  |
2019 |  |  | 0 |  |
Prior |  |  | 0 |  |
Revolving Loans Amortized Cost Basis |  |  | 25 |  |
Total | 2 | 0 | 27 | 0 |
Agricultural Loans | Pass |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 33,037 |  | 33,037 |  | 62,673
2022-2021 | 58,537 |  | 58,537 |  | 47,682
2021-2020 | 41,034 |  | 41,034 |  | 47,355
2020-2019 | 42,723 |  | 42,723 |  | 25,431
2019-2018 | 22,653 |  | 22,653 |  | 21,728
Prior | 104,949 |  | 104,949 |  | 92,344
Revolving Loans Amortized Cost Basis | 65,960 |  | 65,960 |  | 83,862
Total | 368,893 |  | 368,893 |  | 381,075
Agricultural Loans | Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 2,528 |  | 2,528 |  | 634
2022-2021 | 240 |  | 240 |  | 842
2021-2020 | 635 |  | 635 |  | 6,066
2020-2019 | 5,037 |  | 5,037 |  | 4,149
2019-2018 | 2,552 |  | 2,552 |  | 2,355
Prior | 10,101 |  | 10,101 |  | 11,440
Revolving Loans Amortized Cost Basis | 2,649 |  | 2,649 |  | 4,310
Total | 23,742 |  | 23,742 |  | 29,796
Agricultural Loans | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 0
2022-2021 | 0 |  | 0 |  | 210
2021-2020 | 202 |  | 202 |  | 628
2020-2019 | 189 |  | 189 |  | 429
2019-2018 | 292 |  | 292 |  | 85
Prior | 4,791 |  | 4,791 |  | 5,190
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 5,474 |  | 5,474 |  | 6,542
Agricultural Loans | Doubtful |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 0
2022-2021 | 0 |  | 0 |  | 0
2021-2020 | 0 |  | 0 |  | 0
2020-2019 | 0 |  | 0 |  | 0
2019-2018 | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 0 |  | 0 |  | 0
Leases |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 27,207 |  | 27,207 |  | 20,057
2022-2021 | 13,519 |  | 13,519 |  | 14,461
2021-2020 | 11,533 |  | 11,533 |  | 9,648
2020-2019 | 6,964 |  | 6,964 |  | 8,901
2019-2018 | 6,076 |  | 6,076 |  | 1,851
Prior | 1,700 |  | 1,700 |  | 1,478
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 66,999 |  | 66,999 |  | 56,396
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
2023 |  |  | 0 |  |
2022 |  |  | 0 |  |
2021 |  |  | 0 |  |
2020 |  |  | 0 |  |
2019 |  |  | 0 |  |
Prior |  |  | 0 |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Total | 0 | $ 0 | 0 | $ 0 |
Leases | Pass |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 27,207 |  | 27,207 |  | 20,057
2022-2021 | 13,519 |  | 13,519 |  | 14,461
2021-2020 | 11,533 |  | 11,533 |  | 9,648
2020-2019 | 6,964 |  | 6,964 |  | 8,901
2019-2018 | 6,076 |  | 6,076 |  | 1,851
Prior | 1,700 |  | 1,700 |  | 1,478
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 66,999 |  | 66,999 |  | 56,396
Leases | Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 0
2022-2021 | 0 |  | 0 |  | 0
2021-2020 | 0 |  | 0 |  | 0
2020-2019 | 0 |  | 0 |  | 0
2019-2018 | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 0 |  | 0 |  | 0
Leases | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 0
2022-2021 | 0 |  | 0 |  | 0
2021-2020 | 0 |  | 0 |  | 0
2020-2019 | 0 |  | 0 |  | 0
2019-2018 | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | 0 |  | 0 |  | 0
Leases | Doubtful |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023-2022 | 0 |  | 0 |  | 0
2022-2021 | 0 |  | 0 |  | 0
2021-2020 | 0 |  | 0 |  | 0
2020-2019 | 0 |  | 0 |  | 0
2019-2018 | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Total | $ 0 |  | $ 0 |  | $ 0

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481598/310-20-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6A + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-5 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
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: |