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Revenue Recognition - Schedule of Company’s Recognition of Revenue from Contracts (Details) - USD ($) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | $ 12,377,000 | $ 11,811,000 | $ 23,747,000 | $ 22,252,000
Total Revenue Outside the Scope of Topic 606 | 2,497,000 | 9,052,000 | 20,046,000 | 19,067,000
Total Revenue | 14,874,000 | 20,863,000 | 43,793,000 | 41,319,000
Riskless principal transactions with customers [Member] | Principal transactions and proprietary trading [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 2,453,000 | 3,285,000 | 6,161,000 | 6,720,000
Investment banking and advisory fees [Member] | Principal transactions and proprietary trading [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 206,000 |  | 206,000 |
Brokerage Commissions [Member] | Commissions and fees [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 1,515,000 | 1,950,000 | 3,058,000 | 3,842,000
Distribution fees [Member] | Commissions and fees [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 343,000 | 379,000 | 701,000 | 705,000
Insurance commissions [Member] | Commissions and fees [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 156,000 | 274,000 | 357,000 | 356,000
Retail fees (rebates) [Member] | Stock borrow / stock loan [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 4,000 | (3,000) | 10,000 | (12,000)
Stock locate services [Member] | Stock borrow / stock loan [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 5,957,000 | 4,208,000 | 9,989,000 | 7,806,000
Administrative fees [Member] | Other Income [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 426,000 | 823,000 | 857,000 | 1,164,000
Payment for order flow [Member] | Other Income [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 413,000 | 317,000 | 756,000 | 612,000
Other commissions [Member] | Other Income [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers |  | 27,000 |  | 18,000
Recorded Music Revenue [Member] | Other Income [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 113,000 |  | 113,000 |
Advisory fees [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenues from contracts with customers | 791,000 | 551,000 | 1,539,000 | 1,041,000
Proprietary trading [Member] | Principal transactions and proprietary trading [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenue Outside the Scope of Topic 606 | 373,000 | 289,000 | 393,000 | 360,000
Principal transactions - equity investment [Member] | Principal transactions and proprietary trading [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenue Outside the Scope of Topic 606 | (6,803,000) |  | 2,430,000 |
Margin interest [Member] | Interest, marketing and distribution fees [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenue Outside the Scope of Topic 606 | 3,513,000 | 3,831,000 | 6,908,000 | 7,807,000
Interest income [Member] | Interest, marketing and distribution fees [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenue Outside the Scope of Topic 606 | 2,838,000 | 3,498,000 | 5,888,000 | 7,779,000
Marking and distribution fees [Member] | Interest, marketing and distribution fees [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenue Outside the Scope of Topic 606 | 518,000 | 506,000 | 1,018,000 | 1,012,000
Stock rebate revenue [Member] | Stock borrow / stock loan [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenue Outside the Scope of Topic 606 | 1,561,000 | 491,000 | 2,360,000 | 1,000,000
Market Making [Member] |  |  |  |
Schedule of Company’s Recognition of Revenue from Contracts [Line Items] |  |  |  |
Total Revenue Outside the Scope of Topic 606 | $ 497,000 | $ 437,000 | $ 1,049,000 | $ 1,109,000

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