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Securities (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Available-for-sale Securities	$ 12,240,478us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities	$ 8,171,961us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Gains from sale of securities	700,390us-gaap_AvailableForSaleSecuritiesGrossRealizedGains	652,421us-gaap_AvailableForSaleSecuritiesGrossRealizedGains	0us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
Carrying Value Of Securities Pledged To Secure Public Deposits	12,612,000csbq_Carryingvalueofsecuritiespledgedtosecurepublicdeposits	14,385,000csbq_Carryingvalueofsecuritiespledgedtosecurepublicdeposits
Securities Pledged To Secure Repurchase Agreements Carrying Amounts	24,207,000csbq_Securitiespledgedtosecurerepurchaseagreementscarryingamounts	25,521,000csbq_Securitiespledgedtosecurerepurchaseagreementscarryingamounts
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	18,705,000us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	20,140,000us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1
Federal Funds Sold and Securities Purchased under Agreements to Resell Pledged as Collateral	$ 13,037,000us-gaap_FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellPledgedAsCollateral	$ 11,978,000us-gaap_FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellPledgedAsCollateral

X

- Definition

Carrying value of securities pledged to secure public deposits as of balance sheet date.

+ References

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- Definition

Carrying amount of securities pledged to secure repurchase agreements.

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- Definition

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563

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- Definition

The fair value of federal funds sold and securities purchased under agreements to resell that serve as collateral for borrowings.

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-Publisher FASB

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- Definition

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

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- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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