XML 105 R89.htm IDEA: XBRL DOCUMENT
v3.25.0.1

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, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total loans | $ 3,081,230 | $ 2,861,727 |
Current-period gross charge-offs | 3,915 | 1,431 | $ 222
Commercial and Agriculture [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total loans | 328,488 | 304,793 |
Current-period gross charge-offs | 2,197 | 1,300 | 22
Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total loans | 374,367 | 377,321 |
Commercial Real Estate Non Owner Occupied [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total loans | 1,225,991 | 1,161,894 |
Current-period gross charge-offs | 672 |  |
Residential Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total loans | 763,869 | 659,841 |
Current-period gross charge-offs | 83 | 17 | 97
Real Estate Construction [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total loans | 305,992 | 260,409 |
Farm Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total loans | 23,035 | 24,771 |
Consumer and Other [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total loans | 12,588 | 18,056 |
Current-period gross charge-offs | 82 | 114 | $ 80
Term Loans Amortized Cost Basis By Origination Year [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 378,884 | 513,980 |
2023 | 614,398 | 673,054 |
2022 | 600,710 | 459,295 |
2021 | 382,931 | 302,185 |
2020 | 260,320 | 203,527 |
Prior | 527,246 | 423,273 |
Revolving Loans | 316,741 | 286,413 |
Total loans | 3,081,230 | 2,861,727 |
2024 | 1,547 | 7 |
2023 | 545 | 719 |
2022 | 832 | 572 |
2021 | 73 | 7 |
2020 | 117 | 13 |
Prior | 801 | 109 |
Revolving Loans, Charge-offs |  | 5 |
Current-period gross charge-offs | 3,915 | 1,431 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial and Agriculture [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 80,281 | 57,529 |
2023 | 58,707 | 64,336 |
2022 | 38,002 | 52,612 |
2021 | 33,285 | 19,443 |
2020 | 8,766 | 9,787 |
Prior | 13,781 | 14,267 |
Revolving Loans | 95,666 | 86,819 |
Total loans | 328,488 | 304,793 |
2024 | 1,520 |  |
2023 | 339 | 673 |
2022 | 204 | 532 |
2021 | 53 |  |
2020 | 48 |  |
Prior | 33 | 95 |
Current-period gross charge-offs | 2,197 | 1,300 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 26,677 | 36,556 |
2023 | 43,869 | 82,950 |
2022 | 77,888 | 68,643 |
2021 | 63,518 | 56,586 |
2020 | 52,861 | 32,882 |
Prior | 100,784 | 93,860 |
Revolving Loans | 8,770 | 5,844 |
Total loans | 374,367 | 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] |  |  |
2024 | 59,635 | 183,439 |
2023 | 227,608 | 275,108 |
2022 | 306,245 | 205,003 |
2021 | 178,534 | 136,031 |
2020 | 121,313 | 120,781 |
Prior | 303,437 | 218,239 |
Revolving Loans | 29,219 | 23,293 |
Total loans | 1,225,991 | 1,161,894 |
Prior | 672 |  |
Current-period gross charge-offs | 672 |  |
Term Loans Amortized Cost Basis By Origination Year [Member] | Residential Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 98,738 | 90,956 |
2023 | 127,692 | 125,037 |
2022 | 114,844 | 98,566 |
2021 | 91,633 | 71,558 |
2020 | 65,295 | 34,116 |
Prior | 94,921 | 81,202 |
Revolving Loans | 170,746 | 158,406 |
Total loans | 763,869 | 659,841 |
2024 | 2 |  |
2023 |  | 6 |
2021 | 3 |  |
Prior | 78 | 11 |
Current-period gross charge-offs | 83 | 17 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Real Estate Construction [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 90,571 | 108,606 |
2023 | 133,695 | 106,448 |
2022 | 52,564 | 21,928 |
2021 | 10,503 | 8,758 |
2020 | 6,841 | 2,699 |
Prior | 2,369 | 2,635 |
Revolving Loans | 9,449 | 9,335 |
Total loans | 305,992 | 260,409 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Farm Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 571 | 2,207 |
2023 | 2,125 | 967 |
2022 | 883 | 2,256 |
2021 | 2,099 | 4,462 |
2020 | 4,122 | 789 |
Prior | 11,683 | 12,798 |
Revolving Loans | 1,552 | 1,292 |
Total loans | 23,035 | 24,771 |
Term Loans Amortized Cost Basis By Origination Year [Member] | Lease Financing Receivables [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 19,890 | 28,177 |
2023 | 16,982 | 14,071 |
2022 | 7,955 | 6,658 |
2021 | 1,563 | 3,754 |
2020 | 445 | 1,964 |
Prior | 65 | 18 |
Total loans | 46,900 | 54,642 |
2023 | 199 |  |
2022 | 607 |  |
2021 | 12 |  |
2020 | 63 |  |
Current-period gross charge-offs | 881 |  |
Term Loans Amortized Cost Basis By Origination Year [Member] | Consumer and Other [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 2,521 | 6,510 |
2023 | 3,720 | 4,137 |
2022 | 2,329 | 3,629 |
2021 | 1,796 | 1,593 |
2020 | 677 | 509 |
Prior | 206 | 254 |
Revolving Loans | 1,339 | 1,424 |
Total loans | 12,588 | 18,056 |
2024 | 25 | 6 |
2023 | 7 | 40 |
2022 | 21 | 40 |
2021 | 5 | 7 |
2020 | 6 | 13 |
Prior | 18 | 3 |
Revolving Loans, Charge-offs |  | 5 |
Current-period gross charge-offs | 82 | 114 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial and Agriculture [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 74,397 | 56,359 |
2023 | 55,540 | 64,250 |
2022 | 37,078 | 52,258 |
2021 | 33,164 | 17,622 |
2020 | 7,477 | 9,516 |
Prior | 13,449 | 14,088 |
Revolving Loans | 86,804 | 82,982 |
Total loans | 307,909 | 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] |  |  |
2024 | 26,677 | 36,030 |
2023 | 40,344 | 82,502 |
2022 | 72,901 | 67,904 |
2021 | 62,663 | 56,069 |
2020 | 52,478 | 29,784 |
Prior | 97,293 | 92,750 |
Revolving Loans | 8,358 | 5,844 |
Total loans | 360,714 | 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] |  |  |
2024 | 59,635 | 183,439 |
2023 | 227,608 | 269,334 |
2022 | 299,079 | 198,832 |
2021 | 170,534 | 136,031 |
2020 | 121,313 | 120,659 |
Prior | 280,870 | 206,267 |
Revolving Loans | 29,219 | 23,016 |
Total loans | 1,188,258 | 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] |  |  |
2024 | 97,552 | 90,770 |
2023 | 127,090 | 124,695 |
2022 | 113,877 | 97,661 |
2021 | 90,198 | 71,379 |
2020 | 64,528 | 33,534 |
Prior | 91,785 | 78,894 |
Revolving Loans | 168,840 | 157,083 |
Total loans | 753,870 | 654,016 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Real Estate Construction [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 90,417 | 108,606 |
2023 | 133,695 | 105,222 |
2022 | 52,564 | 20,960 |
2021 | 10,348 | 6,739 |
2020 | 6,841 | 2,699 |
Prior | 2,369 | 2,635 |
Revolving Loans | 9,449 | 9,335 |
Total loans | 305,683 | 256,196 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Farm Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 571 | 2,207 |
2023 | 2,125 | 967 |
2022 | 495 | 2,256 |
2021 | 2,099 | 4,462 |
2020 | 4,122 | 789 |
Prior | 11,525 | 12,528 |
Revolving Loans | 1,490 | 1,292 |
Total loans | 22,427 | 24,501 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Lease Financing Receivables [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 18,783 | 28,177 |
2023 | 16,516 | 13,924 |
2022 | 6,955 | 6,620 |
2021 | 1,563 | 3,678 |
2020 | 426 | 1,725 |
Prior | 65 | 1 |
Total loans | 44,308 | 54,125 |
Pass [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Consumer and Other [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 2,521 | 6,510 |
2023 | 3,717 | 4,135 |
2022 | 2,329 | 3,615 |
2021 | 1,787 | 1,578 |
2020 | 677 | 509 |
Prior | 206 | 248 |
Revolving Loans | 1,339 | 1,424 |
Total loans | 12,576 | 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] |  |  |
2024 | 255 | 774 |
2023 | 1,225 |  |
2022 | 511 | 287 |
2021 | 32 | 1,690 |
2020 | 1,286 |  |
Prior |  | 106 |
Revolving Loans | 4,173 | 169 |
Total loans | 7,482 | 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] |  |  |
2024 |  | 526 |
2023 | 3,525 | 217 |
2022 | 4,987 | 739 |
2021 | 855 | 517 |
2020 | 383 |  |
Prior | 302 | 188 |
Revolving Loans | 178 |  |
Total loans | 10,230 | 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] |  |  |
2023 |  | 5,774 |
2022 | 7,166 | 6,171 |
Prior | 10,533 | 8,688 |
Revolving Loans |  | 277 |
Total loans | 17,699 | 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] |  |  |
2024 | 71 |  |
2023 | 286 |  |
2022 |  | 221 |
2021 | 576 | 97 |
2020 | 92 |  |
Prior | 481 | 245 |
Revolving Loans | 426 |  |
Total loans | 1,932 | 563 |
Special Mention [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Real Estate Construction [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 154 |  |
2023 |  | 1,226 |
2022 |  | 926 |
2021 | 155 | 2,019 |
Total loans | 309 | 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] |  |  |
2022 | 388 |  |
Prior | 158 | 20 |
Revolving Loans | 62 |  |
Total loans | 608 | 20 |
Special Mention [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Lease Financing Receivables [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 1,107 |  |
Total loans | 1,107 |  |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial and Agriculture [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 5,629 | 396 |
2023 | 1,942 | 86 |
2022 | 413 | 67 |
2021 | 89 | 131 |
2020 | 3 | 271 |
Prior | 332 | 73 |
Revolving Loans | 3,004 | 3,668 |
Total loans | 11,412 | 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] |  |  |
2023 |  | 231 |
2020 |  | 3,098 |
Prior | 3,189 | 922 |
Revolving Loans | 234 |  |
Total loans | 3,423 | 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] |  |  |
2021 | 8,000 |  |
2020 |  | 122 |
Prior | 12,034 | 3,284 |
Total loans | 20,034 | 3,406 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Residential Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 |  | 186 |
2023 | 316 | 342 |
2022 | 967 | 684 |
2021 | 859 | 82 |
2020 | 675 | 582 |
Prior | 2,655 | 2,063 |
Revolving Loans | 1,180 | 1,323 |
Total loans | 6,652 | 5,262 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Real Estate Construction [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2022 |  | 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] |  |  |
2023 | 466 | 8 |
2022 | 1,000 | 38 |
2021 |  | 61 |
2020 | 19 | 231 |
Prior |  | 17 |
Total loans | 1,485 | 355 |
Substandard [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Consumer and Other [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 3 | 2 |
2022 |  | 14 |
2021 | 9 | 15 |
Prior |  | 6 |
Total loans | 12 | 37 |
Doubtful [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Commercial and Agriculture [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Revolving Loans | 1,685 |  |
Total loans | 1,685 |  |
Doubtful [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Residential Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2024 | 1,115 |  |
Revolving Loans | 300 |  |
Total loans | $ 1,415 |  |
Doubtful [Member] | Term Loans Amortized Cost Basis By Origination Year [Member] | Lease Financing Receivables [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 |  | 139 |
2021 |  | 15 |
2020 |  | 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://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B 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/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 4: 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_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://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 29 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-29 Reference 2: 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 3: 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/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-13 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7A Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 29 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-29 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (1) -Publisher SEC Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (2) -Publisher SEC Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1404 -Paragraph a -Publisher SEC Reference 7: 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 8: 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 9: 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 10: 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 11: 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 12: 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: |