XML 51 R44.htm IDEA: XBRL DOCUMENT
v3.25.1

Consolidated Financial Statements - Additional Information (Details) - Maximum [Member] | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |
Percentage of insurance commission revenue of total revenue | 1.00% | 1.00%
WSP [Member] |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |
Percentage of insurance commission revenue of total revenue | 1.00% | 1.00%
CIVB Risk Management, Inc. [Member] |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |
Percentage of insurance commission revenue of total revenue | 1.00% | 1.00%

X
- Definition Percentage of insurance commission revenue of total revenue. + References No definition available. + Details
Name: | civb_PercentageOfInsuranceCommissionRevenueOfRevenue
Namespace Prefix: | civb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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/2003/role/disclosureRef -Topic 808 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479402/808-10-50-1 + Details
Name: | us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=civb_WaterStreetPropertiesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=civb_CIVBRiskManagementIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |