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Loans and Allowance for Loan Losses (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Total Loans	$ 284,181,000	$ 276,991,000
Less: Allowance for loan losses	(3,158,766)	(6,141,281)	(7,400,000)
Loans, net	281,021,767	270,850,465
Total Loans Percentage	100.00%	100.00%
Commercial Real Estate Owner Occupied [Member]
Total Loans	66,143,000	58,425,000
Total Loans Percentage	23.28%	21.09%
Commercial Real Estate All Other [Member]
Total Loans	66,721,000	66,747,000
Total Loans Percentage	23.48%	24.10%
Consumer Real Estate Mortgage [Member]
Total Loans	69,911,000	71,195,000
Less: Allowance for loan losses	(1,056,000)	(1,528,000)	(2,518,000)
Total Loans Percentage	24.60%	25.70%
Construction and Land Development [Member]
Total Loans	38,970,000	38,557,000
Less: Allowance for loan losses	(339,000)	(1,241,000)	(827,000)
Total Loans Percentage	13.71%	13.92%
Commercial and Industrial Loans [Member]
Total Loans	39,782,000	40,140,000
Less: Allowance for loan losses	(278,000)	(809,000)	(482,000)
Total Loans Percentage	14.00%	14.49%
Consumer and Other Loans [Member]
Total Loans	2,654,000	1,927,000
Less: Allowance for loan losses	$ (20,000)	$ (14,000)	$ (16,000)
Total Loans Percentage	0.93%	0.70%

X

- Definition

Estimated percentage to which the maximum allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans.

+ References

No definition available.

+ Details

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Namespace Prefix:	csbq_
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Balance Type:	na
Period Type:	instant

X

- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ 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 210.9-03.7(d))

-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 7

-Subparagraph d

-Article 9



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

-Subsection 1

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Balance Type:	credit
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X

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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X

- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522



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 210.9-03.7)

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

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