XML 65 R54.htm IDEA: XBRL DOCUMENT
v3.20.2

LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Impaired Loan Balances and Associated Allowance by Portfolio Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded Investment - with an allowance recorded | $ 2,836 | $ 3,227 | $ 2,836 | $ 3,227 | $ 2,841
Unpaid Principal Balance - with an allowance recorded | 2,836 | 3,227 | 2,836 | 3,227 | 2,841
Related Allowance | 494 | 738 | 494 | 738 | 463
Average Recorded Investment - with an allowance recorded | 2,793 | 4,115 | 2,773 | 4,205 | 3,933
Interest Income Recognized - with an allowance recorded | 35 | 31 | 85 | 93 | 121
Recorded Investment - without allowance recorded | 1,288 | 2,290 | 1,288 | 2,290 | 1,637
Unpaid Principal Balance - without allowance recorded | 1,826 | 3,414 | 1,826 | 3,414 | 2,426
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 | 0 | 0 |
Average Recorded Investment - without allowance recorded | 1,350 | 1,960 | 1,507 | 2,081 | 1,993
Interest Income Recognized - without allowance recorded | 6 | 15 | 17 | 43 | 41
Impaired Financing Receivable, Recorded Investment | 4,124 | 5,517 | 4,124 | 5,517 | 4,478
Impaired financing receivable, unpaid principal balance | 4,662 | 6,641 | 4,662 | 6,641 | 5,267
Impaired Financing Receivable, Average Recorded Investment | 4,143 | 6,075 | 4,280 | 6,286 | 5,926
Impaired Financing Receivable, Interest Income, Accrual Method | 41 | 46 | 102 | 136 | 162
Residential Real Estate |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded Investment - with an allowance recorded | 2,394 | 2,337 | 2,394 | 2,337 | 2,395
Unpaid Principal Balance - with an allowance recorded | 2,394 | 2,337 | 2,394 | 2,337 | 2,395
Related Allowance | 371 | 337 | 371 | 337 | 364
Average Recorded Investment - with an allowance recorded | 2,349 | 3,026 | 2,328 | 3,137 | 2,989
Interest Income Recognized - with an allowance recorded | 33 | 28 | 79 | 84 | 110
Recorded Investment - without allowance recorded | 734 | 1,543 | 734 | 1,543 | 989
Unpaid Principal Balance - without allowance recorded | 858 | 2,007 | 858 | 2,007 | 1,116
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 | 0 | 0 |
Average Recorded Investment - without allowance recorded | 791 | 1,337 | 909 | 1,325 | 1,258
Interest Income Recognized - without allowance recorded | 2 | 11 | 4 | 28 | 21
Commercial Real Estate |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded Investment - with an allowance recorded | 126 | 130 | 126 | 130 | 128
Unpaid Principal Balance - with an allowance recorded | 126 | 130 | 126 | 130 | 128
Related Allowance | 36 | 29 | 36 | 29 | 30
Average Recorded Investment - with an allowance recorded | 127 | 130 | 127 | 130 | 130
Interest Income Recognized - with an allowance recorded | 2 | 3 | 6 | 9 | 11
Recorded Investment - without allowance recorded | 334 | 276 | 334 | 276 | 274
Unpaid Principal Balance - without allowance recorded | 548 | 435 | 548 | 435 | 433
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 | 0 | 0 |
Average Recorded Investment - without allowance recorded | 334 | 278 | 304 | 408 | 381
Interest Income Recognized - without allowance recorded | 3 | 3 | 9 | 10 | 13
Commercial |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded Investment - with an allowance recorded | 0 | 442 | 0 | 442 | 0
Unpaid Principal Balance - with an allowance recorded | 0 | 442 | 0 | 442 | 0
Related Allowance | 0 | 303 | 0 | 303 | 0
Average Recorded Investment - with an allowance recorded |  | 301 |  | 365 | 292
Recorded Investment - without allowance recorded | 171 | 204 | 171 | 204 | 319
Unpaid Principal Balance - without allowance recorded | 233 | 267 | 233 | 267 | 685
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 | 0 | 0 |
Average Recorded Investment - without allowance recorded | 175 | 214 | 242 | 218 | 238
Interest Income Recognized - without allowance recorded | 1 | 1 | 4 | 5 | 7
SBA PPP Portfolio Segment |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded Investment - with an allowance recorded | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance - with an allowance recorded | 0 | 0 | 0 | 0 | 0
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment - with an allowance recorded |  |  |  |  | 0
Recorded Investment - without allowance recorded | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance - without allowance recorded | 0 | 0 | 0 | 0 | 0
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 | 0 | 0 |
Average Recorded Investment - without allowance recorded |  |  |  |  | 0
Interest Income Recognized - without allowance recorded |  |  |  |  | 0
Home Equity |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded Investment - with an allowance recorded | 316 | 318 | 316 | 318 | 318
Unpaid Principal Balance - with an allowance recorded | 316 | 318 | 316 | 318 | 318
Related Allowance | 87 | 69 | 87 | 69 | 69
Average Recorded Investment - with an allowance recorded | 317 | 658 | 318 | 573 | 522
Recorded Investment - without allowance recorded | 49 | 267 | 49 | 267 | 55
Unpaid Principal Balance - without allowance recorded | 187 | 705 | 187 | 705 | 192
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 | 0 | 0 |
Average Recorded Investment - without allowance recorded | 50 | 131 | 52 | 130 | 115
Consumer |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded Investment - with an allowance recorded | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance - with an allowance recorded | 0 | 0 | 0 | 0 | 0
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment - with an allowance recorded |  |  |  |  | 0
Recorded Investment - without allowance recorded | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance - without allowance recorded | 0 | 0 | 0 | 0 | 0
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 | 0 | 0 |
Average Recorded Investment - without allowance recorded |  |  |  |  | 1
HPFC Portfolio Segment |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded Investment - with an allowance recorded | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance - with an allowance recorded | 0 | 0 | 0 | 0 | 0
Related Allowance | 0 | 0 | 0 | 0 | 0
Average Recorded Investment - with an allowance recorded |  |  |  |  | 0
Recorded Investment - without allowance recorded | 0 | 0 | 0 | 0 | 0
Unpaid Principal Balance - without allowance recorded | 0 | 0 | 0 | 0 | 0
Impaired Financing Receivable With No Related Allowance Related Allowance | $ 0 | $ 0 | $ 0 | $ 0 |
Average Recorded Investment - without allowance recorded |  |  |  |  | $ 0

X
- Definition Impaired Financing Receivable, With No Related Allowance, Related Allowance + References No definition available. + Details
Name: | cac_ImpairedFinancingReceivableWithNoRelatedAllowanceRelatedAllowance
Namespace Prefix: | cac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_FinancingReceivableImpairedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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