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Receivables from, Payables to, and Deposits with Broker-Dealers and Clearing Organizations - Schedule of Amounts Receivables from, Payables to, and Deposits with Broker-Dealers and Clearing Organizations (Details) - USD ($) | Jun. 30, 2025 | Dec. 31, 2024
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Receivables from and deposits with broker-dealers and clearing organizations |  |  |
DTCC / OCC / NSCC (1) | [1] | $ 9,725,000 | $ 5,777,000
Goldman Sachs & Co. LLC ("GSCO") |  | 57,000 | 50,000
National Financial Services, LLC (“NFS”) |  | 2,391,000 | 2,102,000
Underwriting fees receivable |  | 206,000 |
Securities fail-to-deliver |  | 45,000 | 90,000
Globalshares |  | 53,000 | 68,000
Other receivables |  |  | 60,000
Total Receivables from and deposits with broker-dealers and clearing organizations |  | 12,477,000 | 8,147,000
Payables to broker-dealers and clearing organizations |  |  |
Securities fail-to-receive |  | 825,000 | 439,000
Payables to broker-dealers |  | 354,000 | 5,000
Total Payables to broker-dealers and clearing organizations |  | $ 1,179,000 | $ 444,000
[1] | Depository Trust & Clearing Corporation is referred to as (“DTCC”), Options Clearing Corporation is referred to as (“OCC”), and National Securities Clearing Corporation is referred to as (“NSCC”).

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- Definition Amount payable to broker-dealers or clearing organizations for executing or clearing trades or orders. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(a)(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481913/940-20-25-2 + Details
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- Definition Amount of right to receive cash and securities on deposit with clearing organizations. Clearing organizations perform post trade processing and trade comparisons among numerous broker-dealers and act as settlement agents between buying and selling broker-dealers. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 310 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/940-310/tableOfContent + Details
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- Definition Amount receivable as the result of a fail-to-deliver. A fail-to-deliver is a securities sale to another broker-dealer that has not been delivered to buying broker-dealer by the close of business on the settlement date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481833/940-20-45-3 + Details
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