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SECURITIES AVAILABLE FOR SALE (Details Textual) (USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Proceeds from Sale of Available-for-sale Securities $ 0us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities $ 257,997us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Gain (Loss) on Sale of Securities, Net $ 0us-gaap_GainLossOnSaleOfSecuritiesNet $ 2,856us-gaap_GainLossOnSaleOfSecuritiesNet
Other Than Temporary Impairment [Member]    
Number Of Debt Securities Held 11cshb_NumberOfDebtSecuritiesHeld
/ us-gaap_StatementEquityComponentsAxis
= cshb_OtherThanTemporaryImpairmentMember		  
Percentage Of Aggregate Depreciation 0.52%cshb_PercentageOfAggregateDepreciation
/ us-gaap_StatementEquityComponentsAxis
= cshb_OtherThanTemporaryImpairmentMember		  
US Government-sponsored Enterprises Debt Securities [Member]    
Number Of Debt Securities Held 11cshb_NumberOfDebtSecuritiesHeld
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember		  
US Government Agencies Debt Securities [Member]    
Number Of Debt Securities Held 5cshb_NumberOfDebtSecuritiesHeld
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember