XML 50 R40.htm IDEA: XBRL DOCUMENT
v3.21.2

Loans - Age Analysis of Past Due Loans and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 1,022,618 | $ 1,059,503
Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 965,864 | 974,573
Nonaccrual Loans | 8,896 | 6,610
Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 56,754 | 84,930
Nonaccrual Loans | 309 | 2,518
30-89 Days Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 748 | 2,408
30-89 Days Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 684
90 Days or More Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
90 Days or More Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Total Accruing Loans Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 748 | 2,408
Total Accruing Loans Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 684
Current Loans | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 956,220 | 965,555
Current Loans | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 56,445 | 81,728
Construction, land and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 118,940 | 121,093
Other commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 545,883 | 520,391
Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 664,823 | 641,484
Commercial real estate | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 627,068 | 587,022
Nonaccrual Loans | 4,917 | 2,625
Commercial real estate | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 37,755 | 54,462
Nonaccrual Loans | 87 | 2,185
Commercial real estate | 30-89 Days Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 186 | 1,543
Commercial real estate | 30-89 Days Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 544
Commercial real estate | 90 Days or More Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate | 90 Days or More Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate | Total Accruing Loans Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 186 | 1,543
Commercial real estate | Total Accruing Loans Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 544
Commercial real estate | Current Loans | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 621,965 | 582,854
Commercial real estate | Current Loans | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 37,668 | 51,733
Commercial real estate | Construction, land and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 118,940 | 121,093
Commercial real estate | Construction, land and land development | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 112,843 | 109,577
Nonaccrual Loans | 47 | 80
Commercial real estate | Construction, land and land development | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,097 | 11,516
Nonaccrual Loans | 0 | 117
Commercial real estate | Construction, land and land development | 30-89 Days Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 25 | 1,314
Commercial real estate | Construction, land and land development | 30-89 Days Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate | Construction, land and land development | 90 Days or More Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate | Construction, land and land development | 90 Days or More Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate | Construction, land and land development | Total Accruing Loans Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 25 | 1,314
Commercial real estate | Construction, land and land development | Total Accruing Loans Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate | Construction, land and land development | Current Loans | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 112,771 | 108,183
Commercial real estate | Construction, land and land development | Current Loans | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,097 | 11,399
Commercial real estate | Other commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 545,883 | 520,391
Commercial real estate | Other commercial real estate | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 514,225 | 477,445
Nonaccrual Loans | 4,870 | 2,545
Commercial real estate | Other commercial real estate | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 31,658 | 42,946
Nonaccrual Loans | 87 | 2,068
Commercial real estate | Other commercial real estate | 30-89 Days Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 161 | 229
Commercial real estate | Other commercial real estate | 30-89 Days Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 544
Commercial real estate | Other commercial real estate | 90 Days or More Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate | Other commercial real estate | 90 Days or More Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate | Other commercial real estate | Total Accruing Loans Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 161 | 229
Commercial real estate | Other commercial real estate | Total Accruing Loans Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 544
Commercial real estate | Other commercial real estate | Current Loans | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 509,194 | 474,671
Commercial real estate | Other commercial real estate | Current Loans | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 31,571 | 40,334
Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 170,173 | 183,021
Residential real estate | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 159,527 | 167,714
Nonaccrual Loans | 3,237 | 2,873
Residential real estate | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 10,646 | 15,307
Nonaccrual Loans | 79 | 85
Residential real estate | 30-89 Days Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 383 | 667
Residential real estate | 30-89 Days Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 15
Residential real estate | 90 Days or More Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Residential real estate | 90 Days or More Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Residential real estate | Total Accruing Loans Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 383 | 667
Residential real estate | Total Accruing Loans Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 15
Residential real estate | Current Loans | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 155,907 | 164,174
Residential real estate | Current Loans | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 10,567 | 15,207
Commercial, financial & agricultural |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 167,717 | 213,380
Commercial, financial & agricultural | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 161,295 | 200,800
Nonaccrual Loans | 654 | 1,010
Commercial, financial & agricultural | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,422 | 12,580
Nonaccrual Loans | 47 | 55
Commercial, financial & agricultural | 30-89 Days Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 164 | 150
Commercial, financial & agricultural | 30-89 Days Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 125
Commercial, financial & agricultural | 90 Days or More Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial, financial & agricultural | 90 Days or More Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial, financial & agricultural | Total Accruing Loans Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 164 | 150
Commercial, financial & agricultural | Total Accruing Loans Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 125
Commercial, financial & agricultural | Current Loans | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 160,477 | 199,640
Commercial, financial & agricultural | Current Loans | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,375 | 12,400
Consumer and other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 19,905 | 21,618
Consumer and other | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 17,974 | 19,037
Nonaccrual Loans | 88 | 102
Consumer and other | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,931 | 2,581
Nonaccrual Loans | 96 | 193
Consumer and other | 30-89 Days Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 15 | 48
Consumer and other | 30-89 Days Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Consumer and other | 90 Days or More Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Consumer and other | 90 Days or More Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Consumer and other | Total Accruing Loans Past Due | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 15 | 48
Consumer and other | Total Accruing Loans Past Due | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Consumer and other | Current Loans | Legacy Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 17,871 | 18,887
Consumer and other | Current Loans | Purchased Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 1,835 | $ 2,388

X
- Definition Amount excluding accrued interest, before allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (2) + 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 No definition available. + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_CreditLossStatusAxis=cban_FinancialAssetsAcquiredMember
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: |

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_CommercialRealEstatePortfolioSegmentMember
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: |