Fair Value Disclosures (Details 3) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets:
Cash and cash equivalents	$ 25,446,128	$ 15,527,721	$ 21,916,752	$ 24,851,737
Securities	85,117,000us-gaap_MarketableSecurities	87,218,000us-gaap_MarketableSecurities
Federal Home Loan Bank stock	2,322,900us-gaap_FederalHomeLoanBankStock	2,322,900us-gaap_FederalHomeLoanBankStock
Loans, net	292,376,801	291,869,338
Accrued interest receivable	1,124,989us-gaap_InterestReceivable	1,142,899us-gaap_InterestReceivable
Cash and cash equivalents, Estimated Fair Value	25,446,000	15,528,000
Securities, Estimated Fair Value	85,117,000	87,219,000
Federal Home Loan Bank stock, Estimated Fair Value	2,323,000	2,323,000
Loans, net, Estimated Fair Value	292,560,000	292,490,000
Accrued interest receivable, Estimated Fair Value	1,125,000	1,143,000
Liabilities:
Noninterest-bearing demand deposits	56,620,286	57,034,792
Interest-bearing demand deposits	37,175,706us-gaap_DemandDepositAccounts	26,464,173us-gaap_DemandDepositAccounts
Savings deposits and money market accounts	73,729,602	80,861,110
Time deposits	165,672,183us-gaap_TimeDeposits	144,294,390us-gaap_TimeDeposits
Federal funds purchased and securities sold under agreements to repurchase	19,509,728	29,409,505
Federal Home Loan Bank advances and other borrowings	31,000,000	36,000,000
Accrued interest payable	105,724	71,925
Noninterest-bearing demand deposits, Estimated Fair Value	56,620,000csbq_NoninterestBearingDemandDeposits	57,035,000csbq_NoninterestBearingDemandDeposits
Interest-bearing demand deposits, Estimated Fair Value	37,176,000csbq_InterestBearingDemandDeposits	26,464,000csbq_InterestBearingDemandDeposits
Savings deposits and money market accounts, Estimated Fair Value	73,730,000	80,861,000
Time deposits, Estimated Fair Value	167,530,000csbq_TimeDepositsFairValue	145,907,000csbq_TimeDepositsFairValue
Federal funds purchased and securities sold under agreements to repurchase, Estimated Fair Value	19,510,000	29,410,000
Federal Home Loan Bank advances and other borrowings, Estimated Fair Value	31,220,000	36,321,000
Accrued interest payable, Estimated Fair Value	106,000	72,000
Unrecognized financial instruments (net of contract amount):
Commitments to extend credit	0csbq_CommitmentsToExtendCredit	0csbq_CommitmentsToExtendCredit
Letters of credit	0csbq_LettersOfCredit	0csbq_LettersOfCredit
Lines of credit	0us-gaap_LineOfCredit	0us-gaap_LineOfCredit
Commitments to extend credit, Estimated Fair Value	0	0
Letters of credit, Estimated Fair Value	0csbq_LettersOfCreditFairValueDisclosure	0csbq_LettersOfCreditFairValueDisclosure
Lines of credit, Estimated Fair Value	$ 0	$ 0

Representing accrued interest payable fair value disclosure.

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Representing accrued interest receivable fair value disclosure.

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Representing the commitments to extend credit.

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Representing commitments to extend credit fair value disclosure.

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The aggregate carrying amount of all Federal Home Loan Bank loans (advances) and also includes other borrowings.

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Representing federal home loan bank advances and other borrowings fair value.

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Representing interest bearing demand deposits fair value.

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Representing the letter of credit.

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Representing letters of credit fair value disclosure.

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Representing marketable securities fair value disclosure.

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Representing non interest bearing demand deposits fair value.

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). Also includes amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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Representing savings deposits and money market accounts fair value.

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Representing time deposits fair value.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice.

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Fair value portion of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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Amount after offset of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale.

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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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Amount of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

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