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Subordinated Debt (Details Textual) (USD $)
1 Months Ended 3 Months Ended
Jul. 31, 2007
Mar. 31, 2015
Dec. 31, 2014
Debt Disclosure [Abstract]      
Floating rate trust preferred securities issued $ 5,000,000cldb_FloatingRateTrustPreferredSecuritiesIssuedDuringPeriod    
Maturity date of floating rate trust preferred securities 2037-12    
Investment in common securities issued by trust $ 155,000cldb_InvestmentInSecurities    
Interest rate description   3-month LIBOR rate plus 1.45%  
LIBOR Rate Points 1.45%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1    
Interest rate   1.72%us-gaap_DebtInstrumentInterestRateEffectivePercentage 1.69%us-gaap_DebtInstrumentInterestRateEffectivePercentage