XML 72 R60.htm IDEA: XBRL DOCUMENT
v3.25.1

LOANS AND ALLOWANCE FOR CREDIT LOSSES ON LOANS (Loan Aging Analysis by Portfolio Segment) (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | $ 4,885,086 | $ 4,115,259
Loans 90 Days Past Due and Accruing | 0 | 0
Commercial real estate - non-owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 1,685,852 | 1,387,252
Loans 90 Days Past Due and Accruing | 0 | 0
Commercial real estate - owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 381,246 | 324,712
Loans 90 Days Past Due and Accruing |  | 0
Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 487,409 | 382,785
Loans 90 Days Past Due and Accruing | 0 | 0
Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 2,028,062 | 1,752,249
Loans 90 Days Past Due and Accruing | 0 | 0
Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 283,491 | 253,251
Loans 90 Days Past Due and Accruing | 0 | 0
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 19,026 | 15,010
Loans 90 Days Past Due and Accruing | 0 | 0
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 7,087 | 5,855
Total Past Due | Commercial real estate - non-owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 158 | 189
Total Past Due | Commercial real estate - owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 481 | 1,060
Total Past Due | Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 1,954 | 2,186
Total Past Due | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 3,640 | 1,640
Total Past Due | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 713 | 694
Total Past Due | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 141 | 86
30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 2,598 | 1,333
30-59 Days Past Due | Commercial real estate - non-owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 29 | 59
30-59 Days Past Due | Commercial real estate - owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 313 | 85
30-59 Days Past Due | Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 331 | 373
30-59 Days Past Due | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 1,640 | 333
30-59 Days Past Due | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 204 | 428
30-59 Days Past Due | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 81 | 55
60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 1,998 | 1,297
60-89 Days Past Due | Commercial real estate - non-owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 0 | 0
60-89 Days Past Due | Commercial real estate - owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 38 | 545
60-89 Days Past Due | Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 927 | 265
60-89 Days Past Due | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 798 | 333
60-89 Days Past Due | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 177 | 141
60-89 Days Past Due | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 58 | 13
90 Days or Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 2,491 | 3,225
90 Days or Greater Past Due | Commercial real estate - non-owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 129 | 130
90 Days or Greater Past Due | Commercial real estate - owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 130 | 430
90 Days or Greater Past Due | Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 696 | 1,548
90 Days or Greater Past Due | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 1,202 | 974
90 Days or Greater Past Due | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 332 | 125
90 Days or Greater Past Due | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 2 | 18
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 4,877,999 | 4,109,404
Current | Commercial real estate - non-owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 1,685,694 | 1,387,063
Current | Commercial real estate - owner-occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 380,765 | 323,652
Current | Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 485,455 | 380,599
Current | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 2,024,422 | 1,750,609
Current | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | 282,778 | 252,557
Current | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans outstanding | $ 18,885 | $ 14,924

X
- Definition Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-13 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7A Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 29 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-29 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (1) -Publisher SEC Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (2) -Publisher SEC Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1404 -Paragraph a -Publisher SEC Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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: |

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_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
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_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |