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Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) | Dec. 31, 2024 USD ($) Segment Portfolio | Dec. 31, 2023 USD ($) | Nov. 30, 2023 USD ($) | Jan. 01, 2023 USD ($) | Dec. 31, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Reserve for credit losses |  | $ 0 |  |  |  |
Amortization Cost |  |  |  | $ 51,600 |  |
Percentage of Amortization Cost |  |  |  | 59.00% |  |
Notes Receivables |  | 300 |  |  |  |
Equity method investments, net |  | 20,892 | $ 21,361 |  |  |
Weighted average of years to the life of the Restructured Loans |  |  |  | 1.50% |  |
Allowances for Credit Losses | $ 1,000 | 1,100 |  |  |  |
Other loans placed in nonaccrual status |  | 1,500 |  |  |  |
Allowance for doubtful accounts |  | 100 | 100 |  |  |
Accounts receivable allowance for credit loss |  | 400 | 700 |  |  |
Accumulated deficit |  | (227,844) | (233,026) |  |  |
Accrued interest on loans |  | $ 100 | $ 200 |  |  |
Borrower's note balance, percentage |  | 74.00% | 62.00% |  |  |
Number of distinct portfolio purchases and loan agreements | Portfolio |  | 11 |  |  |  |
Notes receivable, principal amount |  | $ 30,200 |  |  |  |
Due from borrower |  | 22,200 |  |  |  |
Borrower's note balance |  | 22,200 |  |  |  |
Deferred revenue |  | 600 | $ 500 |  |  | $ 400
Intangible assets impairment charges |  | 0 | 0 |  |  |
Deferred tax assets |  | 6,008 | 9,115 |  |  |
Reduction in valuvation allowance |  | 1,300 | 2,200 |  |  |
Allowance for credit loss |  | (383) | (650) |  |  |
Allowance for Credit Losses |  | 400 | 700 |  |  |
Other borrowers |  | 10,800 |  |  |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Advertising and promotion expense |  |  | $ 600 |  |  |
Minimum [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Adjustment to retained earnings |  |  |  |  | $ 300 |
Notes Receivable [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Notes Receivables |  | 5,300 |  |  |  |
Equity Method Investments [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Equity method investments, net |  | 18,200 |  |  |  |
HGC Ltd.[Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Amortization Cost |  |  |  | $ 22,200 |  |
Percentage of Amortization Cost |  |  |  | 57.00% |  |
Equity method investments, net |  | $ 800 |  |  |  |
Consolidated [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of reporting segment | Segment |  | 3 |  |  |  |
ASC 326 [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of service revenue that is recognized over a period of time against total revenue |  | 1.3644% | 1.4183% |  |  |
ASC 326 [Member] | Notes Receivable [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of service revenue that is recognized over a period of time against total revenue |  | 3.70% |  |  |  |
ASC 326 [Member] | Equity Method Investments [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of service revenue that is recognized over a period of time against total revenue |  | 1.3644% | 1.4183% |  |  |
Credit loss rate |  | 4.50% |  |  |  |

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