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SHORT-TERM BORROWINGS (Details Narrative) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Unused balance of line of credit $ 13,000,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity $ 13,000,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Federal Reserve [Member]    
Line of credit maximum borrowing capacity 71,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_FederalReserveBankAdvancesMember		  
REPO Line [Member]    
Line of credit maximum borrowing capacity $ 6,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= bksc_REPOLineMember