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Federal Home Loan Bank Advances and Other Borrowings (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Long-term Federal Home Loan Bank Advances | $ 36,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm | $ 25,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm
Long Term Advance Dated February 9 2005 [Member] |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Long-term Federal Home Loan Bank Advances | 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedFebruary92005Member | 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedFebruary92005Member
Long Term Advance Dated August 13 2007 [Member] |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Long-term Federal Home Loan Bank Advances | 0us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedAugust132007Member | 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedAugust132007Member
Long Term Advance Dated January 7 2008 [Member] |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Long-term Federal Home Loan Bank Advances | 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary72008Member | 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary72008Member
Long Term Advance Dated January 10 2007 [Member] |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Long-term Federal Home Loan Bank Advances | 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary102007Member | 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary102007Member
ShortTerm Advance Dated July 30 2014 [Member] |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Short-term Federal Home Loan Bank Advances | 8,000,000us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate / us-gaap_LongtermDebtTypeAxis = csbq_ShorttermAdvanceDatedJuly302014Member | 0us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate / us-gaap_LongtermDebtTypeAxis = csbq_ShorttermAdvanceDatedJuly302014Member
Short Term Advance Dated November 20 2014 [Member] |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Short-term Federal Home Loan Bank Advances | 8,000,000us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate / us-gaap_LongtermDebtTypeAxis = csbq_ShortTermAdvanceDatedNovember202014Member | 0us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate / us-gaap_LongtermDebtTypeAxis = csbq_ShortTermAdvanceDatedNovember202014Member
Long Term Advance Dated January 20 2006 [Member] |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Long-term Federal Home Loan Bank Advances | $ 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary202006Member | $ 5,000,000us-gaap_FederalHomeLoanBankAdvancesLongTerm / us-gaap_LongtermDebtTypeAxis = csbq_LongTermAdvanceDatedJanuary202006Member

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- Definition Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer. + 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 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64702-112823 + Details
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- Definition Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest 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 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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