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Summary of Significant Accounting Policies (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Line Items]
Percentage Of Loan Related To Commercial Real Estate	55.00%csbq_PercentageOfLoanRelatedToCommercialRealEstate	54.00%csbq_PercentageOfLoanRelatedToCommercialRealEstate
Deposits	$ 308,654,465us-gaap_Deposits	$ 341,414,377us-gaap_Deposits
Securities Sold under Agreements to Repurchase	19,409,506us-gaap_SecuritiesSoldUnderAgreementsToRepurchase
Advertising Expense	112,864us-gaap_AdvertisingExpense	89,859us-gaap_AdvertisingExpense	89,068us-gaap_AdvertisingExpense
Securities Sold under Agreements to Repurchase, Fair Value of Collateral	24,207,000us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral
Percentage Of Qualified Low Income Community Investments	85.00%csbq_PercentageOfQualifiedLowIncomeCommunityInvestments
Single Customer [Member]
Accounting Policies [Line Items]
Deposits		$ 20,204,000us-gaap_Deposits / us-gaap_MajorCustomersAxis = csbq_SingleCustomerMember
Concentration In Deposits Percentage		6.00%csbq_ConcentrationInDepositsPercentage / us-gaap_MajorCustomersAxis = csbq_SingleCustomerMember
Minimum [Member] | Building and Building Improvements [Member]
Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Minimum [Member] | Furniture and Fixtures [Member]
Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member] | Building and Building Improvements [Member]
Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Maximum [Member] | Furniture and Fixtures [Member]
Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	10 years

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Represents percentage of concentration in deposits by a single customer of total deposits.

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Represents percentage of loan related to commercial real estate during the period.

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Represents percentage of qualified low income community investments during the period.

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 720

-SubTopic 35

-Section 50

-Paragraph 1

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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-Section S99

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-Number 210

-Section 03

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value of securities pledged as collateral against securities sold under agreement to repurchase.

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