XML 89 R73.htm IDEA: XBRL DOCUMENT
v3.20.4

Loans and Allowance for Credit Losses on Loans (Financing Receivable, Nonaccrual) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Nonaccrual [Line Items] |  |
Non-Accrual Loans With an Allowance | $ 7,100 |
Non-Accrual Loans Without an Allowance | 496 |
Total Non-Accrual Loans | 7,596 | $ 7,034
Non-Accrual Loans | 7,596 | 7,034
Total Collateral -Dependent Non-Accrual Loans |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 937 |
Non-Accrual Loans | 937 |
Real Estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 248 |
Non-Accrual Loans | 248 |
General Business Assets |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 689 |
Non-Accrual Loans | 689 |
Commercial real estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Non-Accrual Loans With an Allowance | 450 |
Non-Accrual Loans Without an Allowance | 62 |
Total Non-Accrual Loans | 512 | 0
Non-Accrual Loans | 512 | 0
Commercial real estate, non owner-occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Non-Accrual Loans With an Allowance | 351 |
Non-Accrual Loans Without an Allowance | 15 |
Commercial real estate, owner-occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Non-Accrual Loans With an Allowance | 99 |
Non-Accrual Loans Without an Allowance | 47 |
Commercial |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Non-Accrual Loans With an Allowance | 1,549 |
Non-Accrual Loans Without an Allowance | 58 |
Total Non-Accrual Loans | 1,607 | 784
Non-Accrual Loans | 1,607 | 784
Commercial | Total Collateral -Dependent Non-Accrual Loans |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 689 |
Non-Accrual Loans | 689 |
Commercial | Real Estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 0 |
Non-Accrual Loans | 0 |
Commercial | General Business Assets |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 689 |
Non-Accrual Loans | 689 |
Residential real estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Non-Accrual Loans With an Allowance | 3,136 |
Non-Accrual Loans Without an Allowance | 341 |
Total Non-Accrual Loans | 3,477 | 4,096
Non-Accrual Loans | 3,477 | 4,096
Residential real estate | Total Collateral -Dependent Non-Accrual Loans |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 248 |
Non-Accrual Loans | 248 |
Residential real estate | Real Estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 248 |
Non-Accrual Loans | 248 |
Residential real estate | General Business Assets |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total Non-Accrual Loans | 0 |
Non-Accrual Loans | 0 |
Home equity |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Non-Accrual Loans With an Allowance | 1,961 |
Non-Accrual Loans Without an Allowance | 35 |
Total Non-Accrual Loans | 1,996 | 2,130
Non-Accrual Loans | 1,996 | 2,130
Consumer |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Non-Accrual Loans With an Allowance | 4 |
Non-Accrual Loans Without an Allowance | 0 |
Total Non-Accrual Loans | 4 | 24
Non-Accrual Loans | $ 4 | $ 24

X
- Definition Financing Receivable, Nonaccrual, With Allowance + References No definition available. + Details
Name: | cac_FinancingReceivableNonaccrualWithAllowance
Namespace Prefix: | cac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable on nonaccrual status with no allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447 + Details
Name: | us-gaap_FinancingReceivableNonaccrualNoAllowance
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_FinancingReceivableNonaccrualStatusLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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=121611835&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=121599337&loc=SL82919258-210447 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_CollateralPledgedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=cac_GeneralBusinessAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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