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Federal Home Loan Bank Advances and Other Borrowings (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Carrying Value Of Securities Pledged To Federal Home Loan Bank	18,705,000csbq_CarryingValueOfSecuritiesPledgedToFederalHomeLoanBank	$ 20,140,000csbq_CarryingValueOfSecuritiesPledgedToFederalHomeLoanBank
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	49,387,988us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch
Long Term Advance Dated February 9 2005 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	3.86%us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedFebruary92005Member
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date	2015
Long Term Advance Dated August 13 2007 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	4.43%us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedAugust132007Member
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date	2014
Federal Home Loan Bank Advances Put Option Exercisable Date	February 2009
Long Term Advance Dated January 7 2008 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	3.52%us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary72008Member
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date	2015
Federal Home Loan Bank Advances Put Option Exercisable Date	January 2011
ShortTerm Advance Dated July 30 2014 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	0.23%us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate / us-gaap_LongtermDebtTypeAxis = csbq_ShorttermAdvanceDatedJuly302014Member
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date	2015
Short Term Advance Dated November 20 2014 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	0.36%us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate / us-gaap_LongtermDebtTypeAxis = csbq_ShortTermAdvanceDatedNovember202014Member
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date	2015
Long Term Advance Dated January 20 2006 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	4.18%us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary202006Member
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date	2016
Federal Home Loan Bank Advances Put Option Exercisable Date	January 2009
Long Term Advance Dated January 10 2007 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	4.25%us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary102007Member
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date	2017
Federal Home Loan Bank Advances Put Option Exercisable Date	January 2008
Financial Institution [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Other Borrowings		$ 1,740,000us-gaap_OtherBorrowings / us-gaap_LongtermDebtTypeAxis = csbq_FinancialInstitutionMember

X

- Definition

Represents carrying value of securities pledged to federal home loan bank during the reporting period.

+ References

No definition available.

+ Details

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X

- Definition

Represents federal home loan bank advances put option exercisable date during the reporting period.

+ References

No definition available.

+ Details

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X

- Definition

Amount of advances from the Federal Home Loan Bank (FHLB).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

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X

- Definition

Discloses the year of maturity, when only one maturity date applies. for the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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- Definition

Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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- Definition

The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13,16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13, 16

-Article 9

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