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10. Investment In Affiliates (Tables)
 3 Months Ended
Mar. 31, 2016
Notes to Financial Statements  
Investment In and Advances to Affiliate
    SBSF
March 31,
2015
Total assets, including secured demand note of $1,200,000 due from Siebert   $ 26,480,000  
Total liabilities, including subordinated liabilities of $1,200,000 due to Siebert     11,972,000  
Total members’ capital     14,508,000  
Regulatory minimum net capital requirement     250,000  
Total revenues     4,049,000  
Net loss     (1,521,000 )