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FAIR VALUE MEASUREMENTS (Details 2) (USD $)
12 Months Ended 6 Months Ended
Dec. 31, 2012
Jun. 30, 2013
Impaired Loans Receivable [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure $ 1,011,306us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= cshb_ImpairedLoansReceivableMember
467,665us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= cshb_ImpairedLoansReceivableMember
Foreclosed Assets Held For Sale [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure 521,738us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
1,313,648us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
Income Approach [Member] | Impaired Loans Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure 698,475us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= cshb_ImpairedLoansReceivableMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
/ us-gaap_ValuationTechniqueAxis
= cshb_IncomeApproachMemberMember
 
Fair Value Measurements, Valuation Techniques Income approach  
Fair Value Measurements Unobservable Inputs Capitalization rate  
Fair Value Inputs, Comparability Adjustments 10.00%us-gaap_FairValueInputsComparabilityAdjustments
/ us-gaap_FairValueByAssetClassAxis
= cshb_ImpairedLoansReceivableMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
/ us-gaap_ValuationTechniqueAxis
= cshb_IncomeApproachMemberMember
 
Fair Value Assumptions, Weighted Average Volatility Rate 10.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_FairValueByAssetClassAxis
= cshb_ImpairedLoansReceivableMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
/ us-gaap_ValuationTechniqueAxis
= cshb_IncomeApproachMemberMember
 
Income Approach [Member] | Foreclosed Assets Held For Sale [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Measurements, Valuation Techniques   Income approach
Fair Value Measurements Unobservable Inputs   Adjustments for differences in net operating income expectations
Fair Value Assumptions, Weighted Average Volatility Rate   (24.70%)us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_ValuationTechniqueAxis
= cshb_IncomeApproachMemberMember
Income Approach [Member] | Foreclosed Assets Held For Sale [Member] | Commercial Real Estate Portfolio Segment [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure   684,000us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
/ us-gaap_ValuationTechniqueAxis
= cshb_IncomeApproachMemberMember
Fair Value Measurements, Valuation Techniques   Income approach
Fair Value Measurements Unobservable Inputs   Capitalization rate
Fair Value Inputs, Comparability Adjustments   10.00%us-gaap_FairValueInputsComparabilityAdjustments
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
/ us-gaap_ValuationTechniqueAxis
= cshb_IncomeApproachMemberMember
Fair Value Assumptions, Weighted Average Volatility Rate   10.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
/ us-gaap_ValuationTechniqueAxis
= cshb_IncomeApproachMemberMember
Income Approach [Member] | Foreclosed Assets Held For Sale [Member] | Maximum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments   40.00%us-gaap_FairValueInputsComparabilityAdjustments
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
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= cshb_IncomeApproachMemberMember
Income Approach [Member] | Foreclosed Assets Held For Sale [Member] | Minimum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments   4.40%us-gaap_FairValueInputsComparabilityAdjustments
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= cshb_IncomeApproachMemberMember
Sales Comparison Approach [Member] | Impaired Loans Receivable [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Measurements, Valuation Techniques Sales comparison approach  
Fair Value Measurements Unobservable Inputs Adjustments for differences between the comparable sales  
Fair Value Inputs, Comparability Adjustments 0.00%us-gaap_FairValueInputsComparabilityAdjustments
/ us-gaap_FairValueByAssetClassAxis
= cshb_ImpairedLoansReceivableMember
/ us-gaap_ValuationTechniqueAxis
= cshb_SalesComparisonApproachMember
 
Fair Value Assumptions, Weighted Average Volatility Rate 0.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_FairValueByAssetClassAxis
= cshb_ImpairedLoansReceivableMember
/ us-gaap_ValuationTechniqueAxis
= cshb_SalesComparisonApproachMember
 
Sales Comparison Approach [Member] | Foreclosed Assets Held For Sale [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Measurements, Valuation Techniques   Sales comparison approach
Fair Value Measurements Unobservable Inputs   Adjustments for differences between the comparable sales
Fair Value Assumptions, Weighted Average Volatility Rate   (10.20%)us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_ValuationTechniqueAxis
= cshb_SalesComparisonApproachMember
Sales Comparison Approach [Member] | Foreclosed Assets Held For Sale [Member] | Commercial Real Estate Construction Financing Receivable [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure $ 269,100us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
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/ us-gaap_ValuationTechniqueAxis
= cshb_SalesComparisonApproachMember
 
Fair Value Measurements, Valuation Techniques Sales comparison approach  
Fair Value Measurements Unobservable Inputs Adjustments for differences between the comparable sales  
Fair Value Assumptions, Weighted Average Volatility Rate (4.50%)us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_FairValueByAssetClassAxis
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/ us-gaap_ValuationTechniqueAxis
= cshb_SalesComparisonApproachMember
 
Sales Comparison Approach [Member] | Foreclosed Assets Held For Sale [Member] | Maximum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments   45.00%us-gaap_FairValueInputsComparabilityAdjustments
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= cshb_SalesComparisonApproachMember
Sales Comparison Approach [Member] | Foreclosed Assets Held For Sale [Member] | Maximum [Member] | Commercial Real Estate Construction Financing Receivable [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments 45.00%us-gaap_FairValueInputsComparabilityAdjustments
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= cshb_SalesComparisonApproachMember
 
Sales Comparison Approach [Member] | Foreclosed Assets Held For Sale [Member] | Minimum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments   9.30%us-gaap_FairValueInputsComparabilityAdjustments
/ us-gaap_FairValueByAssetClassAxis
= cshb_ForeclosedAssetsHeldForSaleMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= cshb_SalesComparisonApproachMember
Sales Comparison Approach [Member] | Foreclosed Assets Held For Sale [Member] | Minimum [Member] | Commercial Real Estate Construction Financing Receivable [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments 0.00%us-gaap_FairValueInputsComparabilityAdjustments
/ us-gaap_FairValueByAssetClassAxis
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