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Securities (Details 1) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]    
Securities Available for Sale, Due in one year or less, Amortized Cost $ 0us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost  
Securities Available for Sale, Due from one year to five years, Amortized Cost 898,930us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost  
Securities Available for Sale, Due from five years to ten years, Amortized Cost 2,831,489us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost  
Securities Available for Sale, Due after ten years, Amortized Cost 3,858,152us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost  
Securities Available for Sale, Debt securities, Amortized Cost 7,588,571csbq_AvailableForSaleSecuritiesDebtMaturitiesBeforeWithoutSingleMaturityDateAmortizedCost  
Securities Available for Sale, Mortgage-backed securities, Amortized Cost 79,131,444us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost  
Securities Available for Sale, Amortized Cost 86,720,015us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis 91,798,028us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Securities Available for Sale, Due in one year or less, Fair Value 0us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue  
Securities Available for Sale, Due from one year to five years, Fair Value 934,341us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue  
Securities Available for Sale, Due from five years to ten years, Fair Value 2,931,593us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue  
Securities Available for Sale, Due after ten years, Fair Value 4,028,174us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue  
Securities Available for Sale, Debt securities, Fair Value 7,894,108csbq_AvailableForSaleSecuritiesDebtMaturitiesBeforeWithoutSingleMaturityDateFairValue  
Securities Available for Sale, Mortgage-backed securities, Fair Value 79,298,801us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue  
Securities Available for Sale, Fair Value 87,192,909us-gaap_AvailableForSaleSecuritiesDebtSecurities 92,208,672us-gaap_AvailableForSaleSecuritiesDebtSecurities
Securities Held to Maturity, Due in one year or less, Amortized Cost 0us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount  
Securities Held to Maturity, Due from one year to five years, Amortized Cost 0us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount  
Securities Held to Maturity, Due from five years to ten years, Amortized Cost 0us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount  
Securities Held to Maturity, Due after ten years, Amortized Cost 0us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount  
Securities Held to Maturity, Debt securities, Amortized Cost 0csbq_HeldToMaturitySecuritiesDebtMaturitiesBeforeWithoutSingleMaturityDateNetCarryingAmount  
Securities Held to Maturity, Mortgage-backed securities, Amortized Cost 25,428us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount  
Securities Held to Maturity, Amortized Cost 25,428us-gaap_HeldToMaturitySecurities 34,165us-gaap_HeldToMaturitySecurities
Securities Held to Maturity, Due in one year or less, Fair Value 0us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue  
Securities Held to Maturity, Due from one year to five years, Fair Value 0us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue  
Securities Held to Maturity, Due from five years to ten years, Fair Value 0us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue  
Securities Held to Maturity, Due after ten years, Fair Value 0us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue  
Securities Held to Maturity, Debt securities, Fair Value 0csbq_HeldToMaturitySecuritiesDebtMaturitiesBeforeWithoutSingleMaturityDateFairValue  
Securities Held to Maturity, Mortgage-backed securities, Fair Value 25,702us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue  
Securities Held to Maturity, Fair Value $ 25,702us-gaap_HeldToMaturitySecuritiesFairValue $ 35,027us-gaap_HeldToMaturitySecuritiesFairValue