BANK OF SOUTH CAROLINA CORPORATION - PARENT COMPANY (Details 2) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net income	$ 992,173	$ 893,662	$ 890,267	$ 890,726	$ 834,952	$ 649,368	$ 936,973	$ 768,025	$ 3,666,828	$ 3,189,318	$ 3,110,513
Stock-based compensation expense									72,928	64,587	50,721
Net cash (used) provided by operating activities									(5,907,716)	2,239,684	497,527
Dividends paid									(2,489,610)	(1,376,623)	(1,688,084)
Cash paid for fractional shares											2,466
Stock options exercised									11,094	123,403	210,811
Net cash (used) provided by financing activities									(12,532,188)	48,669,823	11,880,300
Net increase (decrease) in cash and cash equivalents									(21,021,628)	27,632,691	14,848,283
Cash and cash equivalents, beginning of year				52,063,476				24,430,785	52,063,476	24,430,785	9,582,502
Cash and cash equivalents, end of year	31,041,848				52,063,476				31,041,848	52,063,476	24,430,785
Change in dividends payable									(488,944)	488,944
Bank of South Carolina Corporation
Cash flows from operating activities:
Net income									3,666,828	3,189,318	3,110,513
Stock-based compensation expense									72,928	64,587	50,721
Equity in undistributed earnings of subsidiary									(1,719,825)	(1,537,906)	(1,531,523)
Decrease (increase) in other assets									3,390	(81,776)	(29,101)
Net cash (used) provided by operating activities									2,023,321	1,634,223	1,600,610
Dividends paid									(2,489,610)	(1,376,623)	(1,688,084)
Cash paid for fractional shares											(2,466)
Stock options exercised									11,094	123,403	210,811
Net cash (used) provided by financing activities									(2,478,516)	(1,253,220)	(1,479,739)
Net increase (decrease) in cash and cash equivalents									(455,195)	381,003	120,871
Cash and cash equivalents, beginning of year				541,500				160,497	541,500	160,497	39,626
Cash and cash equivalents, end of year	86,305				541,500				86,305	541,500	160,497
Change in dividends payable									$ (488,944)	$ 488,944