XML 106 R86.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Fair Value of Financial Instruments and Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Investment securities available for sale, at fair value | $ 938,164 | $ 380,814
Carrying Amount |  |
Assets |  |
Cash and short-term investments | 197,232 | 183,506
Investment securities available for sale, at fair value | 938,164 | 380,814
Other investments | 14,012 | 3,296
Loans held for sale | 38,150 | 52,386
Loans, net | 1,325,067 | 1,047,376
Liabilities |  |
Deposits | 2,374,608 | 1,445,027
Federal Home Loan Bank advances | 51,656 | 22,500
Carrying Amount | PPPLF |  |
Liabilities |  |
Debt |  | 106,789
Carrying Amount | Other borrowed money |  |
Liabilities |  |
Debt | 36,792 | 37,792
Estimated Fair Value |  |
Assets |  |
Cash and short-term investments | 197,232 | 183,506
Investment securities available for sale, at fair value | 938,164 | 380,814
Other investments | 14,012 | 3,296
Loans held for sale | 38,150 | 52,386
Loans, net | 1,328,853 | 1,063,785
Liabilities |  |
Deposits | 2,375,385 | 1,445,984
Federal Home Loan Bank advances | 51,162 | 20,817
Estimated Fair Value | PPPLF |  |
Liabilities |  |
Debt |  | 106,789
Estimated Fair Value | Other borrowed money |  |
Liabilities |  |
Debt | 36,796 | 37,792
Estimated Fair Value | Level 1 |  |
Assets |  |
Cash and short-term investments | 197,232 | 183,506
Investment securities available for sale, at fair value | 87,551 | 245
Other investments | 5,574 | 0
Loans held for sale | 0 | 0
Loans, net | 0 | 0
Liabilities |  |
Deposits | 0 | 0
Federal Home Loan Bank advances | 0 | 0
Estimated Fair Value | Level 1 | PPPLF |  |
Liabilities |  |
Debt |  | 0
Estimated Fair Value | Level 1 | Other borrowed money |  |
Liabilities |  |
Debt | 0 | 0
Estimated Fair Value | Level 2 |  |
Assets |  |
Cash and short-term investments | 0 | 0
Investment securities available for sale, at fair value | 850,613 | 380,569
Other investments | 4,183 | 3,296
Loans held for sale | 38,150 | 52,386
Loans, net | 0 | 0
Liabilities |  |
Deposits | 2,375,385 | 1,445,984
Federal Home Loan Bank advances | 51,162 | 20,817
Estimated Fair Value | Level 2 | PPPLF |  |
Liabilities |  |
Debt |  | 106,789
Estimated Fair Value | Level 2 | Other borrowed money |  |
Liabilities |  |
Debt | 36,796 | 37,792
Estimated Fair Value | Level 3 |  |
Assets |  |
Cash and short-term investments | 0 | 0
Investment securities available for sale, at fair value | 0 | 0
Other investments | 4,255 | 0
Loans held for sale | 0 | 0
Loans, net | 1,328,853 | 1,063,785
Liabilities |  |
Deposits | 0 | 0
Federal Home Loan Bank advances | 0 | 0
Estimated Fair Value | Level 3 | PPPLF |  |
Liabilities |  |
Debt |  | 0
Estimated Fair Value | Level 3 | Other borrowed money |  |
Liabilities |  |
Debt | $ 0 | $ 0

X
- Definition Fair value of Federal Home Loan Bank (FHLBank) advances carried under the fair value option. + References No definition available. + Details
Name: | us-gaap_AdvancesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CashCashEquivalentsAndShortTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + References No definition available. + Details
Name: | us-gaap_DepositsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock. + References No definition available. + Details
Name: | us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. + References No definition available. + Details
Name: | us-gaap_LoansHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
Name: | us-gaap_LoansReceivableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
Name: | us-gaap_LongTermDebtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=cban_OtherBorrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |