XML 80 R69.htm IDEA: XBRL DOCUMENT
v3.7.0.1

COMMITMENTS, CONTINGENCIES AND DERIVATIVES (Narrative) (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) swap | Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($)
Other Commitments [Line Items] |  |  |
Loss Contingency Accrual | $ 0 |  | $ 0
Loss on Cash Flow Hedge Ineffectiveness | $ 0 |  |
Number of interest rate swap agreements | swap | 2 |  |
Derivative, Number of Instruments Held | 2 |  |
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred | $ 1,400,000 |  |
Unrealized Gain (Loss) on Derivatives | (12,000) | $ 292,000 |
Interest rate swaps |  |  |
Other Commitments [Line Items] |  |  |
Derivative Instrument Payment Of Interest Rate Swaps Designated As Cash Flow Hedges | 346,000 | 316,000 |
Notional amount of derivative | 43,000,000 |  | 43,000,000
Cash held as collateral | 8,400,000 |  |
Forward-Starting Interest Rate Swap |  |  |
Other Commitments [Line Items] |  |  |
Derivative Instrument Payment Of Interest Rate Swaps Designated As Cash Flow Hedges | 109,000 | 49,000 |
Notional amount of derivative | 50,000,000 |  | 50,000,000
Cash held as collateral | 0 |  |
Forward Contracts [Member] |  |  |
Other Commitments [Line Items] |  |  |
Notional amount of derivative | 5,715,000 |  | $ 15,125,000
Unrealized Gain (Loss) on Derivatives | $ (118,000) | $ 0 |
Federal home loan bank 30-day | Interest rate swaps |  |  |
Other Commitments [Line Items] |  |  |
Derivative, Number of Instruments Held | 23,000 |  | 0
Notional amount of derivative | $ 121,608,000 |  | $ 0
Commercial and Industrial Sector [Member] | Interest rate swaps |  |  |
Other Commitments [Line Items] |  |  |
Derivative, Number of Instruments Held | 54,000 |  | 50,000
Notional amount of derivative | $ 278,899,000 |  | $ 266,263,000
Contract One [Member] | Interest rate swaps |  |  |
Other Commitments [Line Items] |  |  |
Notional amount of derivative | $ 10,000,000 |  |
Contract One [Member] | Forward-Starting Interest Rate Swap |  |  |
Other Commitments [Line Items] |  |  |
Number of interest rate swap agreements | swap | 1 |  |
Notional amount of derivative | $ 25,000,000 |  |

X
- Definition Derivative Instrument Payment Of Interest Rate Swaps Designated As Cash Flow Hedges + References No definition available. + Details
Name: | cac_DerivativeInstrumentPaymentOfInterestRateSwapsDesignatedAsCashFlowHedges
Namespace Prefix: | cac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Derivative, Number of Interest Rate Swap Agreements + References No definition available. + Details
Name: | cac_DerivativeNumberofInterestRateSwapAgreements
Namespace Prefix: | cac_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of derivative instruments of a particular group held by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNumberOfInstrumentsHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The loss recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
Name: | us-gaap_LossOnCashFlowHedgeIneffectiveness
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
Name: | us-gaap_UnrealizedGainLossOnDerivatives
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=cac_ForwardStartingInterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=cac_Federalhomeloanbank30dayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=us-gaap_CommercialAndIndustrialSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cac_DerivativesByDerivativeInstrumentContractAxis=cac_ContractOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |