XML 16 R5.htm IDEA: XBRL DOCUMENT v3.4.0.3

CONSOLIDATED STATEMENTS OF INCOME (Parenthetical)	Aug. 27, 2015
Income Statement [Abstract]
Stock dividend, percent	10.00%

Percent of shares of common stock issued as dividends during the period. Excludes stock splits.

No definition available.

Name:	bksc_StockDividendPercent
Namespace Prefix:	bksc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

No definition available.

Name:	us-gaap_IncomeStatementAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration