13. Subsequent Events:	9 Months Ended
Sep. 30, 2015
Subsequent Events [Abstract]
13. Subsequent Events:	On November 9, 2015, Siebert, entered into a purchase agreement pursuant to which SBSF repurchased Siebert’s 49% membership interest in SBSF for an aggregate purchase price of $8.0 million, $4.0 million of which was paid in cash at closing and the balance of which was paid in the form of a secured junior subordinated promissory note in the principal amount of $4.0 million (the “SBSF Junior Note”). The SBSF Junior Note ranks junior in right of payment to up to $5.0 million of subordinated indebtedness incurred by SBSF at the time of the repurchase closing (the “SBSF Senior Debt”). The SBSF Junior Note is secured by a pledge by SBSF’s post-closing members of a number of the outstanding membership interests of SBSF that at all times will equal no less than 49% of the outstanding SBSF membership interests on a fully diluted basis. The SBSF Junior Note matures on November 9, 2020 and bears interest at a rate per year equal to 8% compounding monthly and payable in full at maturity. The SBSF Junior Note does not require any principal amortization before maturity; however, SBSF has the option to prepay the interest or principal without penalty. The SBSF Junior Note is subject to covenants and events of defaults that are substantially equivalent to those applicable to the SBSF Senior Debt, including covenants restricting debt and lien incurrence by SBS and SBSF; provided that the SBSF Junior Note is subject to customary intercreditor arrangements with the holders of the SBSF Senior Debt. Immediately upon the dissolution, liquidation, termination or expiration of SBSF or SBS, or a change of control of SBSF or SBS, or sale of all or substantially all of their consolidated assets, SBSF is obligated to prepay all of the then outstanding balance of the Junior Subordinated Note.

13. Subsequent Events:

9 Months Ended

Sep. 30, 2015

On November 9, 2015, Siebert, entered into a purchase agreement pursuant to which SBSF repurchased Siebert’s 49% membership interest in SBSF for an aggregate purchase price of $8.0 million, $4.0 million of which was paid in cash at closing and the balance of which was paid in the form of a secured junior subordinated promissory note in the principal amount of $4.0 million (the “SBSF Junior Note”). The SBSF Junior Note ranks junior in right of payment to up to $5.0 million of subordinated indebtedness incurred by SBSF at the time of the repurchase closing (the “SBSF Senior Debt”). The SBSF Junior Note is secured by a pledge by SBSF’s post-closing members of a number of the outstanding membership interests of SBSF that at all times will equal no less than 49% of the outstanding SBSF membership interests on a fully diluted basis. The SBSF Junior Note matures on November 9, 2020 and bears interest at a rate per year equal to 8% compounding monthly and payable in full at maturity. The SBSF Junior Note does not require any principal amortization before maturity; however, SBSF has the option to prepay the interest or principal without penalty. The SBSF Junior Note is subject to covenants and events of defaults that are substantially equivalent to those applicable to the SBSF Senior Debt, including covenants restricting debt and lien incurrence by SBS and SBSF; provided that the SBSF Junior Note is subject to customary intercreditor arrangements with the holders of the SBSF Senior Debt. Immediately upon the dissolution, liquidation, termination or expiration of SBSF or SBS, or a change of control of SBSF or SBS, or sale of all or substantially all of their consolidated assets, SBSF is obligated to prepay all of the then outstanding balance of the Junior Subordinated Note.