XML 82 R71.htm IDEA: XBRL DOCUMENT
v3.19.1

FAIR VALUE MEASUREMENT AND DISCLOSURE (Summary of Assets Measured at Fair Value on Non Recurring Basis) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Collateral-dependent impaired loans | Fair Value, Measurements, Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Fair Value | $ 925 | $ 522
Collateral-dependent impaired loans | Fair Value, Measurements, Nonrecurring | Company Determined Fair Value (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Fair Value | 925 | 522
Other real estate owned | Company Determined Fair Value (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Fair Value | 130 | 130
Other real estate owned | Fair Value, Measurements, Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Fair Value | 130 |
Other real estate owned | Fair Value, Measurements, Nonrecurring | Company Determined Fair Value (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Fair Value | $ 130 | $ 130

X
- Definition Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] + References No definition available. + Details
Name: | cac_FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisLineItems
Namespace Prefix: | cac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=cac_ImpairedLoanscollateraldependentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
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: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=cac_OtherRealEstateOwnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |