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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2025
Receivables from clients [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Allowances for uncollectible amounts due from clients/ advisor loans/ others | The following table reflects a roll-forward of the allowance for credit losses on receivables from clients (in thousands):
| December 31,
| 2025 | 2024 | 2023
Beginning balance — January 1 | $ | 2,044 |  | $ | 1,590 |  | $ | 909 |
Provision for credit losses | 6,473 |  | 559 |  | 1,054 |
(Charge-offs) recoveries, net | (453) |  | (105) |  | (373) |
Ending balance — December 31 | $ | 8,064 |  | $ | 2,044 |  | $ | 1,590 |
Advisor Loans [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Allowances for uncollectible amounts due from clients/ advisor loans/ others | The following table reflects a roll-forward of the allowance for credit losses on advisor loans (in thousands):
| December 31,
| 2025 | 2024 | 2023
Beginning balance — January 1 | $ | 17,901 |  | $ | 12,977 |  | $ | 15,144 |
Provision for credit losses | 1,867 |  | 10,049 |  | 8,393 |
(Charge-offs) recoveries, net | (2,723) |  | (5,128) |  | (10,560) |
Other | 116 |  | 3 |  | — |
Ending balance — December 31 | $ | 17,161 |  | $ | 17,901 |  | $ | 12,977 |
Receivables from others [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Allowances for uncollectible amounts due from clients/ advisor loans/ others | The following table reflects a roll-forward of the allowance for credit losses on other receivables (in thousands):
| December 31,
| 2025 | 2024 | 2023
Beginning balance — January 1 | $ | 2,345 |  | $ | 1,448 |  | $ | 2,788 |
Provision for credit losses | 8,637 |  | 8,362 |  | 6,500 |
(Charge-offs) recoveries, net | (7,585) |  | (8,015) |  | (7,840) |
Other | — |  | 550 |  | — |
Ending balance — December 31 | $ | 3,397 |  | $ | 2,345 |  | $ | 1,448 |

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