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Loans and Allowance for Loan Losses (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 296,034us-gaap_LoansAndLeasesReceivableGrossCarryingAmount	$ 295,364us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Commercial Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	144,770us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_CommercialRealEstateMortgageMember	143,168us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_CommercialRealEstateMortgageMember
Consumer Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	76,255us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_ConsumerRealEstateMortgageMember	76,907us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_ConsumerRealEstateMortgageMember
Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	35,376us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_ConstructionAndLandDevelopmentMember	34,449us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_ConstructionAndLandDevelopmentMember
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	36,813us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_CommercialAndIndustrialLoansMember	37,863us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_CommercialAndIndustrialLoansMember
Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,820us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_ConsumerAndOtherLoansMember	2,977us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = csbq_ConsumerAndOtherLoansMember
Performing Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	290,246us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember	286,526us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember
Performing Loans [Member] | Commercial Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	141,949us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_CommercialRealEstateMortgageMember	138,711us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_CommercialRealEstateMortgageMember
Performing Loans [Member] | Consumer Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	74,741us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConsumerRealEstateMortgageMember	74,828us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConsumerRealEstateMortgageMember
Performing Loans [Member] | Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	35,145us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConstructionAndLandDevelopmentMember	33,696us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConstructionAndLandDevelopmentMember
Performing Loans [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	35,591us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_CommercialAndIndustrialLoansMember	36,314us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_CommercialAndIndustrialLoansMember
Performing Loans [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,820us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConsumerAndOtherLoansMember	2,977us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_PerformingLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConsumerAndOtherLoansMember
Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,788us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember	8,838us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember
Impaired Loans [Member] | Commercial Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,821us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_CommercialRealEstateMortgageMember	4,457us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_CommercialRealEstateMortgageMember
Impaired Loans [Member] | Consumer Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,514us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConsumerRealEstateMortgageMember	2,079us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConsumerRealEstateMortgageMember
Impaired Loans [Member] | Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	231us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConstructionAndLandDevelopmentMember	753us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConstructionAndLandDevelopmentMember
Impaired Loans [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,222us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_CommercialAndIndustrialLoansMember	1,549us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_CommercialAndIndustrialLoansMember
Impaired Loans [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConsumerAndOtherLoansMember	$ 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / csbq_ClassificationOfLoansAxis = csbq_ImpairedLoansMember / us-gaap_FinancialInstrumentAxis = csbq_ConsumerAndOtherLoansMember

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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