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Derivatives (Offsetting Assets And Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Derivative Asset [Abstract]  
Amounts offset in the Balance Sheet $ 0us-gaap_DerivativeAssetFairValueGrossLiability
Gross amounts of financial instrument not offset in the balance sheet netting adjustment per applicable master netting agreements 0cacb_DerivativeAssetNettingAdjustmentPerApplicableMasterNettingAgreements
Gross amounts of financial instrument not offset in the balance sheet fair value of financial collateral in the balance sheet 0us-gaap_DerivativeCollateralObligationToReturnCash
Derivative Liability [Abstract]  
Amounts offset in the Balance Sheet 0us-gaap_DerivativeLiabilityFairValueGrossAsset
Gross amounts of financial instrument not offset in the balance sheet netting adjustment per applicable master netting agreements 0cacb_DerivativeLiabilityNettingAdjustmentPerApplicableMasterNettingAgreements
Gross amounts of financial instrument not offset in the balance sheet fair value of financial collateral in the balance sheet 4,595us-gaap_DerivativeCollateralRightToReclaimCash
Other Assets [Member] | Interest Rate Swap | Not Designated as Hedging Instrument [Member]  
Derivative Asset [Abstract]  
Gross Amounts Recognized 4,828us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1]
Net Amounts in the Balance Sheet 4,828us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Gross amount of financial instruments not offset in the balance sheet net amount 4,828us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Other Liabilities [Member] | Interest Rate Swap | Not Designated as Hedging Instrument [Member]  
Derivative Liability [Abstract]  
Gross Amounts Recognized 4,828us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2]
Net Amounts in the Balance Sheet 4,828us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Gross amount of financial instruments not offset in the balance sheet net amount $ 233us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
[1] Included in other assets on the consolidated balance sheet
[2] Included in other liabilities on the consolidated balance sheet