XML 100 R85.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Allowance for Credit Losses - Based On the Most Recent Analysis Performed, the Risk Category of Loans, By Type and Year of Originations (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 13,158 | $ 9,253
Current-period gross charge-offs | 1,431 |
Commercial and Agriculture [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 3,698 | 859
Current-period gross charge-offs | 1,300 |
Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 127 | 110
Commercial Real Estate Non Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 1,164
Residential Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 7,403 | 5,097
Current-period gross charge-offs | 17 |
Real Estate Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans |  | 219
Farm Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans |  | 7
Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 197 | $ 416
Current-period gross charge-offs | 114 |
Term Loans Amortized Cost Basis By Origination Year [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 513,980 |
2022 | 673,054 |
2021 | 459,295 |
2020 | 302,185 |
2019 | 203,527 |
Prior | 423,273 |
Revolving Loans | 286,413 |
Total loans | 2,861,727 |
2023 | 7 |
2022 | 719 |
2021 | 572 |
2020 | 7 |
2019 | 13 |
Prior | 109 |
Revolving Loans, Charge-offs | 5 |
Current-period gross charge-offs | 1,431 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial and Agriculture [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 57,529 |
2022 | 64,336 |
2021 | 52,612 |
2020 | 19,443 |
2019 | 9,787 |
Prior | 14,267 |
Revolving Loans | 86,819 |
Total loans | 304,793 |
2022 | 673 |
2021 | 532 |
Prior | 95 |
Current-period gross charge-offs | 1,300 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 36,556 |
2022 | 82,950 |
2021 | 68,643 |
2020 | 56,586 |
2019 | 32,882 |
Prior | 93,860 |
Revolving Loans | 5,844 |
Total loans | 377,321 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Non Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 183,439 |
2022 | 275,108 |
2021 | 205,003 |
2020 | 136,031 |
2019 | 120,781 |
Prior | 218,239 |
Revolving Loans | 23,293 |
Total loans | 1,161,894 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 90,956 |
2022 | 125,037 |
2021 | 98,566 |
2020 | 71,558 |
2019 | 34,116 |
Prior | 81,202 |
Revolving Loans | 158,406 |
Total loans | 659,841 |
2022 | 6 |
Prior | 11 |
Current-period gross charge-offs | 17 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Real Estate Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 108,606 |
2022 | 106,448 |
2021 | 21,928 |
2020 | 8,758 |
2019 | 2,699 |
Prior | 2,635 |
Revolving Loans | 9,335 |
Total loans | 260,409 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Farm Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 2,207 |
2022 | 967 |
2021 | 2,256 |
2020 | 4,462 |
2019 | 789 |
Prior | 12,798 |
Revolving Loans | 1,292 |
Total loans | 24,771 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Lease Financing Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 28,177 |
2022 | 14,071 |
2021 | 6,658 |
2020 | 3,754 |
2019 | 1,964 |
Prior | 18 |
Total loans | 54,642 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 6,510 |
2022 | 4,137 |
2021 | 3,629 |
2020 | 1,593 |
2019 | 509 |
Prior | 254 |
Revolving Loans | 1,424 |
Total loans | 18,056 |
2023 | 6 |
2022 | 40 |
2021 | 40 |
2020 | 7 |
2019 | 13 |
Prior | 3 |
Revolving Loans, Charge-offs | 5 |
Current-period gross charge-offs | 114 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial and Agriculture [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 56,359 |
2022 | 64,250 |
2021 | 52,258 |
2020 | 17,622 |
2019 | 9,516 |
Prior | 14,088 |
Revolving Loans | 82,982 |
Total loans | 297,075 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 36,030 |
2022 | 82,502 |
2021 | 67,904 |
2020 | 56,069 |
2019 | 29,784 |
Prior | 92,750 |
Revolving Loans | 5,844 |
Total loans | 370,883 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Non Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 183,439 |
2022 | 269,334 |
2021 | 198,832 |
2020 | 136,031 |
2019 | 120,659 |
Prior | 206,267 |
Revolving Loans | 23,016 |
Total loans | 1,137,578 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 90,770 |
2022 | 124,695 |
2021 | 97,661 |
2020 | 71,379 |
2019 | 33,534 |
Prior | 78,894 |
Revolving Loans | 157,083 |
Total loans | 654,016 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Real Estate Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 108,606 |
2022 | 105,222 |
2021 | 20,960 |
2020 | 6,739 |
2019 | 2,699 |
Prior | 2,635 |
Revolving Loans | 9,335 |
Total loans | 256,196 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Farm Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 2,207 |
2022 | 967 |
2021 | 2,256 |
2020 | 4,462 |
2019 | 789 |
Prior | 12,528 |
Revolving Loans | 1,292 |
Total loans | 24,501 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Lease Financing Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 28,177 |
2022 | 13,924 |
2021 | 6,620 |
2020 | 3,678 |
2019 | 1,725 |
Prior | 1 |
Total loans | 54,125 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 6,510 |
2022 | 4,135 |
2021 | 3,615 |
2020 | 1,578 |
2019 | 509 |
Prior | 248 |
Revolving Loans | 1,424 |
Total loans | 18,019 |
Special Mention [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial and Agriculture [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 774 |
2021 | 287 |
2020 | 1,690 |
Prior | 106 |
Revolving Loans | 169 |
Total loans | 3,026 |
Special Mention [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 526 |
2022 | 217 |
2021 | 739 |
2020 | 517 |
Prior | 188 |
Total loans | 2,187 |
Special Mention [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Non Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 5,774 |
2021 | 6,171 |
Prior | 8,688 |
Revolving Loans | 277 |
Total loans | 20,910 |
Special Mention [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 221 |
2020 | 97 |
Prior | 245 |
Total loans | 563 |
Special Mention [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Real Estate Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 1,226 |
2021 | 926 |
2020 | 2,019 |
Total loans | 4,171 |
Special Mention [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Farm Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Prior | 20 |
Total loans | 20 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial and Agriculture [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 396 |
2022 | 86 |
2021 | 67 |
2020 | 131 |
2019 | 271 |
Prior | 73 |
Revolving Loans | 3,668 |
Total loans | 4,692 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 231 |
2019 | 3,098 |
Prior | 922 |
Total loans | 4,251 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Non Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2019 | 122 |
Prior | 3,284 |
Total loans | 3,406 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 186 |
2022 | 342 |
2021 | 684 |
2020 | 82 |
2019 | 582 |
Prior | 2,063 |
Revolving Loans | 1,323 |
Total loans | 5,262 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Real Estate Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 42 |
Total loans | 42 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Farm Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Prior | 250 |
Total loans | 250 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Lease Financing Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 8 |
2021 | 38 |
2020 | 61 |
2019 | 231 |
Prior | 17 |
Total loans | 355 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 2 |
2021 | 14 |
2020 | 15 |
Prior | 6 |
Total loans | 37 |
Doubtful [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Lease Financing Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 139 |
2020 | 15 |
2019 | 8 |
Total loans | $ 162 |

X
- Definition Financing receivable, allowance for credit loss, writeoff, year five, originated, four years before current fiscal year. + References No definition available. + Details
Name: | civb_FinancingReceivableAllowanceForCreditLossWriteoffYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | civb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable, allowance for credit loss, writeoff, year five, originated, more than five years before current fiscal year. + References No definition available. + Details
Name: | civb_FinancingReceivableAllowanceForCreditLossWriteoffYearFiveOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | civb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable, allowance for credit loss, writeoff, year four, originated, three years before current fiscal year. + References No definition available. + Details
Name: | civb_FinancingReceivableAllowanceForCreditLossWriteoffYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | civb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable, allowance for credit loss, writeoff, year one, originated, current fiscal year. + References No definition available. + Details
Name: | civb_FinancingReceivableAllowanceForCreditLossWriteoffYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | civb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable, allowance for credit loss, writeoff, year three, originated, two years before current fiscal year. + References No definition available. + Details
Name: | civb_FinancingReceivableAllowanceForCreditLossWriteoffYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | civb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable, allowance for credit loss, writeoff, year two, originated, fiscal year before current fiscal year. + References No definition available. + Details
Name: | civb_FinancingReceivableAllowanceForCreditLossWriteoffYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | civb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + 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 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost 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 + Details
Name: | us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost 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 + Details
Name: | us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost 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 + Details
Name: | us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost 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 + Details
Name: | us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost 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 + Details
Name: | us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost 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 + Details
Name: | us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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/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
- Definition Amortized cost 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 + Details
Name: | us-gaap_FinancingReceivableRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of writeoff 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 + Details
Name: | us-gaap_FinancingReceivableRevolvingWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and 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 80 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-80 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 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) -Publisher SEC Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (2) -Publisher SEC Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1404 -Paragraph (a) -Publisher SEC Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-14 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7A -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-7A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=civb_CommercialAndAgricultureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=civb_CommercialRealEstateOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=civb_CommercialRealEstateNonOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=civb_RealEstateConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=civb_FarmRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=civb_ConsumerAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=civb_LeaseFinancingReceivablesMember
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: |