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Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands |  | 1 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 01, 2023 USD ($) | Oct. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) Portfolio Segment | Dec. 31, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Reserve for Credit Losses to Notes Receivable |  |  |  | $ 0 |
Amortization Cost |  | $ 51,600 |  |  |
Percentage of Amortization Cost |  | 59.00% |  |  |
Notes Receivables |  | $ 8,400 |  | 400 |
Equity Method Investments |  |  |  | 21,361 | $ 13,973
Weighted average of years to the life of the Restructured Loans |  | 1.50% |  |  |
Allowances for Credit Losses |  |  | $ 1,000 | 1,100 |
Allowance for doubtful accounts |  |  |  | 132 | 122
Accounts receivable allowance for credit loss |  |  |  | 700 | 0
Accumulated deficit |  |  |  | (233,026) | (245,270)
Accrued interest on loans |  |  |  | 200 | 100
Accounts receivable |  |  |  | 700 | $ 600
Offset against Selling, general and administrative cost |  |  |  | $ 100 |
Borrower's note balance, percentage |  |  |  | 62.00% | 82.00%
Number of distinct portfolio purchases and loan agreements | Portfolio |  |  |  | 11 |
Notes receivable, principal amount |  |  |  | $ 38,400 |
Due from borrower |  |  |  | 23,800 |
Borrower's note balance |  |  |  | 23,800 |
Intangible assets impairment charges |  |  |  | 0 | $ 0
Deferred tax assets |  |  |  | 9,115 | 9,449
Reduction in valuvation allowance |  |  |  | 2,200 |
Allowance for credit loss |  |  |  | (650) | 0
Allowance for Credit Losses |  |  |  | 700 | 0
Loans to the borrow experiencing financial difficulty |  |  |  | 17,500 |
Other borrowers |  |  |  | 11,900 |
Selling, General and Administrative Expenses [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Advertising and promotion expense |  |  |  | $ 600 | 400
Maximum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Percentage of service revenue that is recognized over a period of time against total revenue |  |  |  | 80.00% |
Allowance for doubtful accounts |  |  |  |  | 100
Minimum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Adjustment to retained earnings | $ 300 |  |  |  |
HGC Ltd.[Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Amortization Cost |  | $ 22,200 |  |  |
Percentage of Amortization Cost |  | 57.00% |  |  |
Equity Method Investments |  | $ 13,800 |  | $ 700 |
Allowance for doubtful accounts |  |  |  |  | 100
ASC 606 [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Deferred revenue |  |  |  | $ 500 |
Number of reporting segment | Segment |  |  |  | 3 |
ASC 606 [Member] | Maximum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Percentage of service revenue that is recognized over a period of time against total revenue |  |  |  | 1.00% |
ASC 326 [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Reserve for credit losses |  |  |  | $ 700 |
Percentage of service revenue that is recognized over a period of time against total revenue | 1.3231% |  |  |  |
Reserve for Credit Losses to Notes Receivable |  |  |  |  | 200
Increase in reserve for credit losses | $ 200 |  |  |  |
Allowance for doubtful accounts |  |  |  |  | 100
Reserve balance for credit loss | 100 |  |  | $ 100 | 10,000
Accumulated deficit | (10,000) |  |  |  | (200)
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 |  |  |  | 1.4183% |
Credit loss rate |  |  |  | 3.60% |
Loans to the borrow experiencing financial difficulty |  |  |  | $ 23,800 |
Other borrowers |  |  |  | $ 13,600 | $ 1,000
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 |  |  |  | 1.4183% |
Credit loss rate |  |  |  | 4.30% |
Accounts receivable allowance for credit loss | 200 |  |  |  |
Allowance for credit loss |  |  |  | $ 900 |
Allowance for Credit Losses | $ 200 |  |  |  |

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