Disclosure - LOANS (Details 8) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Summary of activity in other real estate owned:
Balance, beginning of period
Additions - foreclosure	557,416bksc_Foreclosures
Sales	35,473bksc_SaleProceedsPeriodForeclosedAssets
Write-downs
Balance, end of period	$ 521,943us-gaap_ForeclosedAssets

The amount of loans on real estate which were foreclosed on during the reporting period and thereby transferred to other real estate owned (OREO property).

No definition available.

+ Details

Name:	bksc_Foreclosures
Namespace Prefix:	bksc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Proceeds of sale of foreclosed client assets during the period.

+ References

No definition available.

+ Details

Name:	bksc_SaleProceedsPeriodForeclosedAssets
Namespace Prefix:	bksc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	bksc_SummaryOfActivityInOtherRealEstateOwnedAbstract
Namespace Prefix:	bksc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4437-111522

+ Details

Name:	us-gaap_ForeclosedAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of expense recognized in the income statement for a decrease in valuation of real estate owned (REO).

+ 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 210.9-03.10(4))

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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration