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Securities (Details Textual) (USD $) | 12 Months Ended
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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 |

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- Definition Carrying amount of securities pledged to secure repurchase agreements. + References No definition available. + Details
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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 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5086-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 320 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28366721&loc=d3e22002-158495 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 + Details
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- Definition Amount of the collateral pledged in support of federal home loan bank advances outstanding. + 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 (d) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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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 -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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