XML 11 R46.htm IDEA: XBRL DOCUMENT
v3.20.1

Loans - Age Analysis of Past Due Loans and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019
--- | --- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Loans | $ 989,026 | $ 968,814 | $ 968,814
Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 3,962 | 1,914 |
Nonaccrual Loans | 10,130 | 9,179 |
Current Loans | 826,560 | 836,007 |
Loans | 840,652 | 847,100 |
Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 683 | 701 |
Nonaccrual Loans | 0 | 0 |
Current Loans | 147,691 | 121,013 |
Loans | 148,374 | 121,714 |
30-89 Days Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 3,962 | 1,914 |
30-89 Days Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 683 | 701 |
90 Days or More Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
90 Days or More Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Residential real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | 190,969 | 194,796 | 194,796
Residential real estate | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 1,635 | 1,296 |
Nonaccrual Loans | 3,336 | 3,643 |
Current Loans | 164,228 | 166,402 |
Loans | 169,199 | 171,341 |
Residential real estate | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 57 |
Nonaccrual Loans | 0 | 0 |
Current Loans | 21,770 | 23,398 |
Loans | 21,770 | 23,455 |
Residential real estate | 30-89 Days Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 1,635 | 1,296 |
Residential real estate | 30-89 Days Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 57 |
Residential real estate | 90 Days or More Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Residential real estate | 90 Days or More Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Commercial, financial, & agricultural |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | 116,786 | 114,360 | 114,360
Commercial, financial, & agricultural | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 531 | 212 |
Nonaccrual Loans | 2,779 | 1,628 |
Current Loans | 95,811 | 89,695 |
Loans | 99,121 | 91,535 |
Commercial, financial, & agricultural | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 553 |
Nonaccrual Loans | 0 | 0 |
Current Loans | 17,665 | 22,272 |
Loans | 17,665 | 22,825 |
Commercial, financial, & agricultural | 30-89 Days Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 531 | 212 |
Commercial, financial, & agricultural | 30-89 Days Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 553 |
Commercial, financial, & agricultural | 90 Days or More Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Commercial, financial, & agricultural | 90 Days or More Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Consumer and other |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | 22,750 | 23,322 | 23,322
Consumer and other | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 113 | 21 |
Nonaccrual Loans | 129 | 138 |
Current Loans | 19,061 | 19,086 |
Loans | 19,303 | 19,245 |
Consumer and other | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 4 | 8 |
Nonaccrual Loans | 0 | 0 |
Current Loans | 3,443 | 4,069 |
Loans | 3,447 | 4,077 |
Consumer and other | 30-89 Days Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 113 | 21 |
Consumer and other | 30-89 Days Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 4 | 8 |
Consumer and other | 90 Days or More Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Consumer and other | 90 Days or More Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Construction, land and land development |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | 134,037 |  | 96,097
Other commercial real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | 524,484 |  | $ 540,239
Commercial Real Estate Portfolio Segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | 658,521 | 636,336 |
Commercial Real Estate Portfolio Segment | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 1,683 | 385 |
Nonaccrual Loans | 3,886 | 3,770 |
Current Loans | 547,460 | 560,824 |
Loans | 553,029 | 564,979 |
Commercial Real Estate Portfolio Segment | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 679 | 83 |
Nonaccrual Loans | 0 | 0 |
Current Loans | 104,813 | 71,274 |
Loans | 105,492 | 71,357 |
Commercial Real Estate Portfolio Segment | 30-89 Days Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 1,683 | 385 |
Commercial Real Estate Portfolio Segment | 30-89 Days Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 679 | 83 |
Commercial Real Estate Portfolio Segment | 90 Days or More Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Commercial Real Estate Portfolio Segment | 90 Days or More Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Commercial Real Estate Portfolio Segment | Construction, land and land development |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | 134,037 | 96,097 |
Commercial Real Estate Portfolio Segment | Construction, land and land development | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 293 | 50 |
Nonaccrual Loans | 81 | 32 |
Current Loans | 85,894 | 82,954 |
Loans | 86,268 | 83,036 |
Commercial Real Estate Portfolio Segment | Construction, land and land development | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 679 | 0 |
Nonaccrual Loans | 0 | 0 |
Current Loans | 47,090 | 13,061 |
Loans | 47,769 | 13,061 |
Commercial Real Estate Portfolio Segment | Construction, land and land development | 30-89 Days Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 293 | 50 |
Commercial Real Estate Portfolio Segment | Construction, land and land development | 30-89 Days Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 679 | 0 |
Commercial Real Estate Portfolio Segment | Construction, land and land development | 90 Days or More Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Commercial Real Estate Portfolio Segment | Construction, land and land development | 90 Days or More Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Commercial Real Estate Portfolio Segment | Other commercial real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | 524,484 | 540,239 |
Commercial Real Estate Portfolio Segment | Other commercial real estate | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 1,390 | 335 |
Nonaccrual Loans | 3,805 | 3,738 |
Current Loans | 461,566 | 477,870 |
Loans | 466,761 | 481,943 |
Commercial Real Estate Portfolio Segment | Other commercial real estate | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 83 |
Nonaccrual Loans | 0 | 0 |
Current Loans | 57,723 | 58,213 |
Loans | 57,723 | 58,296 |
Commercial Real Estate Portfolio Segment | Other commercial real estate | 30-89 Days Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 1,390 | 335 |
Commercial Real Estate Portfolio Segment | Other commercial real estate | 30-89 Days Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 83 |
Commercial Real Estate Portfolio Segment | Other commercial real estate | 90 Days or More Past Due | Legacy Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | 0 | 0 |
Commercial Real Estate Portfolio Segment | Other commercial real estate | 90 Days or More Past Due | Purchased Loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accruing Loans Past Due | $ 0 | $ 0 |

X
- Definition Amount of financing receivable not past due. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922355-210448 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentCurrent
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=118936363&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=119407570&loc=SL82919258-210447 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable past due. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922355-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
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
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cban_ConsumerAndOtherMember
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: |