XML 77 R63.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 4 - Loans - Age Analysis of Past Due Loans and Nonaccrual Loans (Details) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Accruing loans past due | $ 4,558,405 | $ 4,468,990 |
Nonaccrual loans | 7,502,702 | 12,350,066 |
Current loans | 753,222,748 | 737,464,507 |
Loans | 765,283,855 | 754,283,563 | $ 758,635,595
Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 4,558,405 | 4,468,868 |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  | 122 |
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] |  |  |
Accruing loans past due | 328,483 | 419,969 |
Nonaccrual loans | 598,305 | 634,955 |
Current loans | 47,195,475 | 45,969,954 |
Loans | 48,122,263 | 47,024,878 | 47,781,689
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 328,483 | 419,969 |
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] |  |  |
Accruing loans past due | 110,482 | 33,046 |
Nonaccrual loans | 398,509 | 208,522 |
Current loans | 15,933,590 | 16,838,011 |
Loans | 16,442,581 | 17,079,579 | 19,193,497
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 110,482 | 33,046 |
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Commercial [Member] |  |  |
Accruing loans past due | 918,997 | 491,468 |
Nonaccrual loans | 2,172,229 | 6,360,176 |
Current loans | 348,080,442 | 342,238,387 |
Loans | 351,171,668 | 349,090,031 | 346,262,033
Real Estate Portfolio Segment [Member] | Commercial [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 918,997 | 491,468 |
Real Estate Portfolio Segment [Member] | Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] |  |  |
Accruing loans past due | 27,062 | 54,001 |
Nonaccrual loans | 477,043 | 190,494 |
Current loans | 44,709,855 | 30,113,867 |
Loans | 45,213,960 | 30,358,362 | 40,106,633
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 27,062 | 54,001 |
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Residential Construction [Member] |  |  |
Accruing loans past due | 119,443 |  |
Nonaccrual loans |  |  |
Current loans | 8,464,003 | 11,830,447 |
Loans | 8,583,446 | 11,830,447 | 9,413,263
Real Estate Portfolio Segment [Member] | Residential Construction [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 119,443 |  |
Real Estate Portfolio Segment [Member] | Residential Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Residential [Member] |  |  |
Accruing loans past due | 2,482,276 | 3,178,833 |
Nonaccrual loans | 2,829,966 | 3,944,337 |
Current loans | 188,736,703 | 188,456,797 |
Loans | 194,048,945 | 195,579,967 | 197,002,419
Real Estate Portfolio Segment [Member] | Residential [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 2,482,276 | 3,178,833 |
Real Estate Portfolio Segment [Member] | Residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Farmland [Member] |  |  |
Accruing loans past due | 318,329 | 95,309 |
Nonaccrual loans | 838,577 | 799,556 |
Current loans | 66,610,749 | 65,982,332 |
Loans | 67,767,655 | 66,877,197 | 61,779,859
Real Estate Portfolio Segment [Member] | Farmland [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 318,329 | 95,309 |
Real Estate Portfolio Segment [Member] | Farmland [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Consumer and Other Portfolio Segment [Member] | Consumer [Member] |  |  |
Accruing loans past due | 246,175 | 196,364 |
Nonaccrual loans | 188,073 | 212,026 |
Current loans | 18,521,780 | 19,286,851 |
Loans | 18,956,028 | 19,695,241 | 20,605,465
Consumer and Other Portfolio Segment [Member] | Consumer [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 246,175 | 196,242 |
Consumer and Other Portfolio Segment [Member] | Consumer [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  | 122 |
Consumer and Other Portfolio Segment [Member] | Other [Member] |  |  |
Accruing loans past due | 7,158 |  |
Nonaccrual loans |  |  |
Current loans | 14,970,151 | 16,747,861 |
Loans | 14,977,309 | 16,747,861 | $ 16,490,737
Consumer and Other Portfolio Segment [Member] | Other [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 7,158 |  |
Consumer and Other Portfolio Segment [Member] | Other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |

X
- Definition Financing receivables that are current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&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_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_FinancingReceivablePortfolioSegmentAxis=cban_CommercialAndAgriculturalPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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

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