2.4.0.6 Html 33 149 1 false 4 0 false 4 false false R1.htm 00090 - Document - Document And Entity Information Sheet http://www.CornerstoneBancCorp.com/role/DocumentDocumentAndEntityInformation Document And Entity Information true false R2.htm 00100 - Statement - Consolidated Balance Sheets Sheet http://www.CornerstoneBancCorp.com/role/StatementConsolidatedBalanceSheets Consolidated Balance Sheets false false R3.htm 00105 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.CornerstoneBancCorp.com/role/StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) false false R4.htm 00200 - Statement - Consolidated Statements Of Income (Loss) Sheet http://www.CornerstoneBancCorp.com/role/StatementConsolidatedStatementsOfIncomeLoss Consolidated Statements Of Income (Loss) false false R5.htm 00300 - Statement - Consolidated Statements Of Shareholders' Equity And Comprehensive Income (Loss) Sheet http://www.CornerstoneBancCorp.com/role/StatementConsolidatedStatementsOfShareholdersEquityAndComprehensiveIncomeLoss Consolidated Statements Of Shareholders' Equity And Comprehensive Income (Loss) false false R6.htm 00305 - Statement - Consolidated Statements Of Shareholders' Equity And Comprehensive Income (Loss) (Parenthetical) Sheet http://www.CornerstoneBancCorp.com/role/StatementConsolidatedStatementsOfShareholdersEquityAndComprehensiveIncomeLossParenthetical Consolidated Statements Of Shareholders' Equity And Comprehensive Income (Loss) (Parenthetical) false false R7.htm 00400 - Statement - Consolidated Statements Of Cash Flows Sheet http://www.CornerstoneBancCorp.com/role/StatementConsolidatedStatementsOfCashFlows Consolidated Statements Of Cash Flows false false R8.htm 10101 - Disclosure - Summary Of Significant Accounting Policies And Activities Sheet http://www.CornerstoneBancCorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesAndActivities Summary Of Significant Accounting Policies And Activities false false R9.htm 10201 - Disclosure - Restrictions On Cash And Due From Banks Sheet http://www.CornerstoneBancCorp.com/role/DisclosureRestrictionsOnCashAndDueFromBanks Restrictions On Cash And Due From Banks false false R10.htm 10301 - Disclosure - Federal Funds Sold Sheet http://www.CornerstoneBancCorp.com/role/DisclosureFederalFundsSold Federal Funds Sold false false R11.htm 10401 - Disclosure - Investment Securities Sheet http://www.CornerstoneBancCorp.com/role/DisclosureInvestmentSecurities Investment Securities false false R12.htm 10501 - Disclosure - Loans Sheet http://www.CornerstoneBancCorp.com/role/DisclosureLoans Loans false false R13.htm 10601 - Disclosure - Property And Equipment Sheet http://www.CornerstoneBancCorp.com/role/DisclosurePropertyAndEquipment Property And Equipment false false R14.htm 10701 - Disclosure - Property Acquired In Foreclosure Sheet http://www.CornerstoneBancCorp.com/role/DisclosurePropertyAcquiredInForeclosure Property Acquired In Foreclosure false false R15.htm 10801 - Disclosure - Deposits Sheet http://www.CornerstoneBancCorp.com/role/DisclosureDeposits Deposits false false R16.htm 10901 - Disclosure - Customer Repurchase Agreements Sheet http://www.CornerstoneBancCorp.com/role/DisclosureCustomerRepurchaseAgreements Customer Repurchase Agreements false false R17.htm 11001 - Disclosure - Borrowings From Federal Home Loan Bank Of Atlanta Sheet http://www.CornerstoneBancCorp.com/role/DisclosureBorrowingsFromFederalHomeLoanBankOfAtlanta Borrowings From Federal Home Loan Bank Of Atlanta false false R18.htm 11101 - Disclosure - Broker Repurchase Agreements Sheet http://www.CornerstoneBancCorp.com/role/DisclosureBrokerRepurchaseAgreements Broker Repurchase Agreements false false R19.htm 11201 - Disclosure - Commitments And Contingencies Sheet http://www.CornerstoneBancCorp.com/role/DisclosureCommitmentsAndContingencies Commitments And Contingencies false false R20.htm 11301 - Disclosure - Cumulative Perpetual Preferred Stock (8%) Sheet http://www.CornerstoneBancCorp.com/role/DisclosureCumulativePerpetualPreferredStock8 Cumulative Perpetual Preferred Stock (8%) false false R21.htm 11401 - Disclosure - Income Taxes Sheet http://www.CornerstoneBancCorp.com/role/DisclosureIncomeTaxes Income Taxes false false R22.htm 11501 - Disclosure - Related Party Transactions Sheet http://www.CornerstoneBancCorp.com/role/DisclosureRelatedPartyTransactions Related Party Transactions false false R23.htm 11601 - Disclosure - Financial Instruments With Off Balance Sheet Risk Sheet http://www.CornerstoneBancCorp.com/role/DisclosureFinancialInstrumentsWithOffBalanceSheetRisk Financial Instruments With Off Balance Sheet Risk false false R24.htm 11701 - Disclosure - Employee Benefit Plan Sheet http://www.CornerstoneBancCorp.com/role/DisclosureEmployeeBenefitPlan Employee Benefit Plan false false R25.htm 11801 - Disclosure - Stock Option Plans Sheet http://www.CornerstoneBancCorp.com/role/DisclosureStockOptionPlans Stock Option Plans false false R26.htm 11901 - Disclosure - Dividends Sheet http://www.CornerstoneBancCorp.com/role/DisclosureDividends Dividends false false R27.htm 12001 - Disclosure - Regulatory Matters Sheet http://www.CornerstoneBancCorp.com/role/DisclosureRegulatoryMatters Regulatory Matters false false R28.htm 12101 - Disclosure - Estimated Fair Value Of Financial Instruments Sheet http://www.CornerstoneBancCorp.com/role/DisclosureEstimatedFairValueOfFinancialInstruments Estimated Fair Value Of Financial Instruments false false R29.htm 12201 - Disclosure - Parent Company Information Sheet http://www.CornerstoneBancCorp.com/role/DisclosureParentCompanyInformation Parent Company Information false false All Reports Book All Reports Process Flow-Through: 00100 - Statement - Consolidated Balance Sheets Process Flow-Through: Removing column 'Dec. 31, 2009' Process Flow-Through: Removing column 'Dec. 31, 2008' Process Flow-Through: 00105 - Statement - Consolidated Balance Sheets (Parenthetical) Process Flow-Through: 00200 - Statement - Consolidated Statements Of Income (Loss) Process Flow-Through: 00305 - Statement - Consolidated Statements Of Shareholders' Equity And Comprehensive Income (Loss) (Parenthetical) Process Flow-Through: 00400 - Statement - Consolidated Statements Of Cash Flows ctot-20111231.xml ctot-20111231.xsd ctot-20111231_cal.xml ctot-20111231_def.xml ctot-20111231_lab.xml ctot-20111231_pre.xml true true