D - INVESTMENT IN FORMER AFFILIATES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investment and advances		$ 7,979,000	$ 8,022,000
Income from equity investees	$ 671,000	84,000	(65,000)
Distributions	98,000	186,000	1,218,000
Siebert, Brandford, Shank Financial LLC and Subsidiary
Investment and advances		7,979,000
Income from equity investees	671,000	84,000
Distributions	$ 98,000	$ 13,000
SBSFPC
Investment and advances			190,000
Income from equity investees		$ (17,000)	(159,000)
Distributions		$ 173,000	6,000
SBS
Investment and advances			7,832,000
Income from equity investees			94,000
Distributions			$ 1,212,000