B - INVESTMENT IN AFFILIATES (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
Total assets	$ 33,456,000				$ 34,823,000				$ 33,456,000	$ 34,823,000
Total liabilities	2,416,000				3,599,000				2,416,000	3,599,000
Regulatory minimum net capital requirement	250,000				250,000				250,000	250,000
Total revenue	4,732,000	4,073,000	5,625,000	6,553,000	4,341,000	5,857,000	4,498,000	5,503,000	20,983,000	20,199,000	20,770,000
Net income (loss)	(331,000)	(912,000)	447,000	625,000	(994,000)	(591,000)	(1,790,000)	(2,004,000)	(171,000)	(5,379,000)	(2,640,000)
SBS
Total assets	27,752,000				31,403,000				27,752,000	31,403,000
Total liabilities	9,555,000				14,592,000				9,555,000	14,592,000
Total members’ capital	18,197,000				16,811,000				18,197,000	16,811,000
Regulatory minimum net capital requirement	250,000				493,000				250,000	493,000
Total revenue									28,246,000	26,441,000	48,769,000
Net income (loss)									1,579,000	17,000	8,372,000
SBSFPC
Total assets	167,841,000				238,290,000				167,841,000	238,290,000
Total liabilities	166,775,000				237,317,000				166,775,000	237,317,000
Total members’ capital	1,066,000				974,000				1,066,000	974,000
Total revenue									293,000	610,000	124,000
Net income (loss)									$ 98,000	$ 61,000	$ (72,000)