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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative 3) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
SummaryOfSignificantAccountingPoliciesLineItems [Line Items]      
Investment securities classified as trading securities $ 0us-gaap_TradingSecurities $ 0us-gaap_TradingSecurities $ 0us-gaap_TradingSecurities
Other-than-temporary impairment for securities 0us-gaap_ImpairmentOfInvestments 0us-gaap_ImpairmentOfInvestments 0us-gaap_ImpairmentOfInvestments
Cash Reserve Requirement Average Demand Deposit Criterion One [Member]      
SummaryOfSignificantAccountingPoliciesLineItems [Line Items]      
Cash reserve requirement, deposit with FRB as a percentage of daily average demand deposit balance 3.00%czbs_CashReserveRequirementDepositWithFederalReserveBankAsPercentageOfDailyAverageDemandDeposit
/ czbs_CashReserveRequirementCriteriaAxis
= czbs_CashReserveRequirementAverageDemandDepositCriterionOneMember		    
Cash Reserve Requirement Average Demand Deposit Criterion Two [Member]      
SummaryOfSignificantAccountingPoliciesLineItems [Line Items]      
Cash reserve requirement, deposit with FRB as a percentage of daily average demand deposit balance 10.00%czbs_CashReserveRequirementDepositWithFederalReserveBankAsPercentageOfDailyAverageDemandDeposit
/ czbs_CashReserveRequirementCriteriaAxis
= czbs_CashReserveRequirementAverageDemandDepositCriterionTwoMember		    
Minimum [Member] | Cash Reserve Requirement Average Demand Deposit Criterion One [Member]      
SummaryOfSignificantAccountingPoliciesLineItems [Line Items]      
Cash reserve requirement, daily average demand deposit balance 13,300,000czbs_CashReserveRequirementDailyAverageDemandDeposit
/ czbs_CashReserveRequirementCriteriaAxis
= czbs_CashReserveRequirementAverageDemandDepositCriterionOneMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		    
Minimum [Member] | Cash Reserve Requirement Average Demand Deposit Criterion Two [Member]      
SummaryOfSignificantAccountingPoliciesLineItems [Line Items]      
Cash reserve requirement, daily average demand deposit balance 89,000,000czbs_CashReserveRequirementDailyAverageDemandDeposit
/ czbs_CashReserveRequirementCriteriaAxis
= czbs_CashReserveRequirementAverageDemandDepositCriterionTwoMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		    
Maximum [Member] | Cash Reserve Requirement Average Demand Deposit Criterion One [Member]      
SummaryOfSignificantAccountingPoliciesLineItems [Line Items]      
Cash reserve requirement, daily average demand deposit balance $ 89,000,000czbs_CashReserveRequirementDailyAverageDemandDeposit
/ czbs_CashReserveRequirementCriteriaAxis
= czbs_CashReserveRequirementAverageDemandDepositCriterionOneMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember