Related Party Disclosures	12 Months Ended
Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Disclosures	19. Related Party Disclosures StockCross StockCross and the Company are under common ownership and StockCross, prior to January 1,2020, served as one of the clearing broker dealers for the Company. The StockCross clearing agreement with the Company provided that StockCross passed through all revenue and charged the Company for related clearing expenses. Outside of the clearing agreement, the Company had an expense sharing agreement with StockCross for its Beverly Hills and Jersey City offices, and StockCross paid some vendors for miscellaneous expenses which it passed through to the Company. As of December 31, 2019, the Company had receivables from StockCross totaling approximately $2.0 million, consisting of financing for inventory positions, the net monthly clearing fees StockCross owes the Company, and a clearing deposit. As of December 31, 2019, the Company had a payable to StockCross totaling $7,000. As of December 31, 2018, the Company had receivables from StockCross totaling approximately $1.3 million consisting of financing for inventory positions, the net monthly clearing fees StockCross owes MSCO, and a clearing deposit. In January 2019, the Company purchased approximately 15% of StockCross’ outstanding shares. Effective January 1, 2020, the Company acquired the remaining 85% of StockCross in exchange for 3,298,774 shares of the Company’s Common Stock and StockCross was merged with and into MSCO. For the year ended December 31, 2019, the loss recognized from the Company’s 15% investment in StockCross was $66,000. Kennedy Cabot Acquisition, LLC KCA is an affiliate of the Company and StockCross and is under common ownership with the Company. To gain efficiencies and economies of scale with billing and administrative functions, KCA serves as a paymaster for the Company and StockCross for payroll and related functions, the entirety of which KCA passes through to the Company and StockCross proportionally. In August 2018, the Company acquired all of the issued and outstanding membership interests of SNXT from KCA for approximately $690,000. In addition, KCA has purchased the naming rights of the Company for the Company to use. Park Wilshire Companies, Inc. PWC brokers the insurance policies for related parties. Revenue for PWC from related parties was $69,000 and $28,000 for the years ended December 31, 2019 and 2018, respectively. As of December 31, 2019, the Company had a receivable from PWC totaling approximately $11,000. In March 2018, the Company acquired all of the issued and outstanding shares of PWC from three related parties for approximately $110,000. Gloria E. Gebbia On December 2, 2019, the Company entered into an agreement with Gloria E. Gebbia, the Company’s principal shareholder, for a promissory note of $3 million to finance part of the acquisition of Weeden Prime. The term of the promissory note was one year and interest accrues at 4% per year. The interest expense incurred for the year ended December 31, 2019 was $10,000. The total interest will be payable upon maturity of the note on December 2, 2020, which is included in the line item “Interest Payable” on the statement of financial condition. See “Note 11 – Note Payable - Related Party” for additional detail.

19. Related Party Disclosures

StockCross

StockCross and the Company are under common ownership and StockCross, prior to January 1,2020, served as one of the clearing broker dealers for the Company. The StockCross clearing agreement with the Company provided that StockCross passed through all revenue and charged the Company for related clearing expenses. Outside of the clearing agreement, the Company had an expense sharing agreement with StockCross for its Beverly Hills and Jersey City offices, and StockCross paid some vendors for miscellaneous expenses which it passed through to the Company.

As of December 31, 2019, the Company had receivables from StockCross totaling approximately $2.0 million, consisting of financing for inventory positions, the net monthly clearing fees StockCross owes the Company, and a clearing deposit. As of December 31, 2019, the Company had a payable to StockCross totaling $7,000. As of December 31, 2018, the Company had receivables from StockCross totaling approximately $1.3 million consisting of financing for inventory positions, the net monthly clearing fees StockCross owes MSCO, and a clearing deposit.

In January 2019, the Company purchased approximately 15% of StockCross’ outstanding shares. Effective January 1, 2020, the Company acquired the remaining 85% of StockCross in exchange for 3,298,774 shares of the Company’s Common Stock and StockCross was merged with and into MSCO. For the year ended December 31, 2019, the loss recognized from the Company’s 15% investment in StockCross was $66,000.

Kennedy Cabot Acquisition, LLC

KCA is an affiliate of the Company and StockCross and is under common ownership with the Company. To gain efficiencies and economies of scale with billing and administrative functions, KCA serves as a paymaster for the Company and StockCross for payroll and related functions, the entirety of which KCA passes through to the Company and StockCross proportionally. In August 2018, the Company acquired all of the issued and outstanding membership interests of SNXT from KCA for approximately $690,000. In addition, KCA has purchased the naming rights of the Company for the Company to use.

Park Wilshire Companies, Inc.

PWC brokers the insurance policies for related parties. Revenue for PWC from related parties was $69,000 and $28,000 for the years ended December 31, 2019 and 2018, respectively. As of December 31, 2019, the Company had a receivable from PWC totaling approximately $11,000. In March 2018, the Company acquired all of the issued and outstanding shares of PWC from three related parties for approximately $110,000.

Gloria E. Gebbia

On December 2, 2019, the Company entered into an agreement with Gloria E. Gebbia, the Company’s principal shareholder, for a promissory note of $3 million to finance part of the acquisition of Weeden Prime. The term of the promissory note was one year and interest accrues at 4% per year. The interest expense incurred for the year ended December 31, 2019 was $10,000. The total interest will be payable upon maturity of the note on December 2, 2020, which is included in the line item “Interest Payable” on the statement of financial condition. See “Note 11 – Note Payable - Related Party” for additional detail.