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STOCK OPTIONS (Details Textual) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost $ 0us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 $ 0us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 11 months 8 days  
Director Stock Option Plan of 2005 [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 20,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_PlanNameAxis
= cshb_DirectorStockOptionPlanOf2005Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 10 years