BANK OF SOUTH CAROLINA CORPORATION - PARENT COMPANY (Details 1) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Statements of Operations
Interest income	$ 4,478,024	$ 4,470,152	$ 4,284,170	$ 4,210,179	$ 4,217,475	$ 4,006,407	$ 3,826,763	$ 3,694,639	$ 17,442,525	$ 15,745,284	$ 14,916,857
Net Income	$ 1,806,194	$ 1,778,153	$ 1,726,357	$ 1,612,230	$ 848,699	$ 1,440,653	$ 1,386,385	$ 1,226,088	6,922,934	4,901,825	5,247,063
Bank of South Carolina Corporation - Parent [Member]
Condensed Statements of Operations
Interest income									1,157	484	571
Net operating expenses									(224,316)	(189,872)	(177,612)
Dividends received from bank									3,775,000	2,685,000	2,340,000
Equity in undistributed earnings of subsidiary									3,371,093	2,406,213	3,084,104
Net Income									$ 6,922,934	$ 4,901,825	$ 5,247,063