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v3.26.1

Summary of Significant Accounting Policies (Details Narrative) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jul. 26, 2024 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
AccountingPolicies [Line Items] |  |  |  |  |
Cash equivalents |  | $ 4,500,000 | $ 11,800,000 |  |
Cash, FDIC insured limits |  | 250,000 |  |  |
Cash, SIPC insured limits |  | 500,000 |  |  |
Unsegregated cash |  | 8,700,000 |  |  |
Cash uninsured limits |  | 7,200,000 | 4,300,000 |  |
Revolving credit, maximum borrowing capacity |  | 2,000,000.0 |  |  |
Deposits |  | 2,000,000.0 |  |  |
Cash segregated in compliance with regulations |  | 2,331,000 | 844,000 |  |
Clearing deposits |  | 2,000,000 | 1,738,000 |  |
Prepaid and other expenses |  | 433,000 | 513,000 |  |
Intangible assets acquired |  | 44,000 | 44,000 |  |
Prepaid professional fees |  | 50,000 | 50,000 |  |
Security deposit |  | 19,000 | 19,000 |  |
Prepaid insurance |  | 169,000 | 160,000 |  |
Various prepaid expense |  | 130,000 | 150,000 |  |
Other assets |  | 21,000 | 90,000 |  |
Net unrealized gain (loss) on investment securities |  | (246,000) | (275,000) | [1] |
Impairment of securities |  |  | 200,000 | [2] | $ 50,000
Research and development costs |  | 0 | 2,800,000 |  |
Grant drawdowns |  | 0 | 2,000,000.0 |  |
Net of grant received |  | 0 | 3,400,000 |  |
Patent and licensing legal and filing fees and costs |  | 54,000 | 296,000 |  |
Revolving Credit Facility [Member] |  |  |  |  |
AccountingPolicies [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity | $ 2,000,000.0 |  |  |  |
Deposits |  | 2,100,000 | 2,100,000 |  |
Maturity date | Jul. 26, 2025 |  |  |  |
Variable rate | 2.25% |  |  |  |
Interest rate | 7.75% |  |  |  |
Credit non-usage fee | $ 5,000 |  |  |  |
Outstanding indebtedness |  | 0 | 0 |  |
Interest payable |  | $ 0 | $ 0 |  |
SAFE [Member] |  |  |  |  |
AccountingPolicies [Line Items] |  |  |  |  |
Impairment of securities |  |  |  |  | $ 100,000
[1] | Includes unrealized gains and losses on securities held by the broker-dealer.
[2] | Includes impairment loss of assets from the reduced fair value of the asset.

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