XML 52 R42.htm IDEA: XBRL DOCUMENT
v3.25.3

Loans - Schedule of Aging of Amortized Cost Basis of Loans by Aging Category and Accrual Status (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | $ 2,037,056 | $ 1,842,980
Total commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,305,803 | 1,195,694
Total commercial real estate | Construction, land & land development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 240,819 | 205,046
Total commercial real estate | Other commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,064,984 | 990,648
Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 377,058 | 344,167
Commercial, financial & agricultural |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 213,274 | 213,910
Consumer and other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 140,921 | 89,209
Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 2,037,056 | 1,842,980
Nonaccrual Loans | 14,268 | 10,660
Legacy Loans | 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 3,513 | 8,361
Legacy Loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 98 | 152
Legacy Loans | Total Accruing Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 3,611 | 8,513
Legacy Loans | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 2,019,177 | 1,823,807
Legacy Loans | Total commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,305,803 | 1,195,694
Nonaccrual Loans | 7,921 | 4,833
Legacy Loans | Total commercial real estate | 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 144 | 2,985
Legacy Loans | Total commercial real estate | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 0 | 0
Legacy Loans | Total commercial real estate | Total Accruing Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 144 | 2,985
Legacy Loans | Total commercial real estate | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,297,738 | 1,187,876
Legacy Loans | Total commercial real estate | Construction, land & land development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 240,819 | 205,046
Nonaccrual Loans | 388 | 0
Legacy Loans | Total commercial real estate | Construction, land & land development | 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 49 | 544
Legacy Loans | Total commercial real estate | Construction, land & land development | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 0 | 0
Legacy Loans | Total commercial real estate | Construction, land & land development | Total Accruing Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 49 | 544
Legacy Loans | Total commercial real estate | Construction, land & land development | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 240,382 | 204,502
Legacy Loans | Total commercial real estate | Other commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,064,984 | 990,648
Nonaccrual Loans | 7,533 | 4,833
Legacy Loans | Total commercial real estate | Other commercial real estate | 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 95 | 2,441
Legacy Loans | Total commercial real estate | Other commercial real estate | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 0 | 0
Legacy Loans | Total commercial real estate | Other commercial real estate | Total Accruing Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 95 | 2,441
Legacy Loans | Total commercial real estate | Other commercial real estate | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,057,356 | 983,374
Legacy Loans | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 377,058 | 344,167
Nonaccrual Loans | 1,214 | 1,204
Legacy Loans | Residential real estate | 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 929 | 3,689
Legacy Loans | Residential real estate | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 0 | 0
Legacy Loans | Residential real estate | Total Accruing Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 929 | 3,689
Legacy Loans | Residential real estate | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 374,915 | 339,274
Legacy Loans | Commercial, financial & agricultural |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 213,274 | 213,910
Nonaccrual Loans | 5,016 | 4,559
Legacy Loans | Commercial, financial & agricultural | 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,337 | 1,348
Legacy Loans | Commercial, financial & agricultural | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 0 | 0
Legacy Loans | Commercial, financial & agricultural | Total Accruing Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,337 | 1,348
Legacy Loans | Commercial, financial & agricultural | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 206,921 | 208,003
Legacy Loans | Consumer and other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 140,921 | 89,209
Nonaccrual Loans | 117 | 64
Legacy Loans | Consumer and other | 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,103 | 339
Legacy Loans | Consumer and other | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 98 | 152
Legacy Loans | Consumer and other | Total Accruing Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | 1,201 | 491
Legacy Loans | Consumer and other | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, net of unearned income | $ 139,603 | $ 88,654

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: 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 2: 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 Reference 3: 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_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (3) -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (2) -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -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/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 13: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 14: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 15: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 16: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 17: 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 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

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

X
- Details
Name: | us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetOriginatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=cban_FinancingReceivables3089DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |