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Software, Net (Schedule of Software, Net) (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |
Total Software | $ 2,933,000 | $ 2,534,000 |
Total Software, net | 1,334,000 | 1,888,000 | [1]
Robo-Advisor [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Total Software | 763,000 | 763,000 |
Less accumulated amortization | (509,000) | (254,000) |
Other purchased software [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Total Software | 2,170,000 | 1,771,000 |
Less accumulated amortization | $ (1,090,000) | $ (392,000) |
[1] | Statement of financial condition as of December 31, 2019 represents the pro forma combination of Siebert and StockCross balances. See "Note 3 - Acquisitions" for additional detail.

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