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Notes Held for Investment (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) item | Jun. 30, 2022 USD ($) item | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total notes held for investment |  |  | $ 6,100 |  | $ 6,100 |  | $ 5,372
Interest income from promissory notes |  |  | 133 | $ 118 | 258 | $ 227 |
Changes in fair value |  |  |  |  | 128 |  |
Long-term Investments. |  |  | 512 |  | 512 |  | 512
Senior secured promissory notes |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total notes held for investment |  |  | 1,000 |  | 1,000 |  | 1,000
Interest rate (as a percent) |  | 5.00% |  |  |  |  |
Number of notes receivable | item |  | 2 |  |  |  |  |
Term (in years) |  | 3 years |  |  |  |  |
Aggregate principal amount |  | $ 1,000 |  |  |  |  |
Secured convertible promissory note |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total notes held for investment |  |  | 5,100 |  | 5,100 |  | 4,372
Secured convertible promissory note | Monarch |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total notes held for investment |  |  | 5,100 |  | 5,100 |  | 5,100
Maximum amount of available funding | $ 5,000 |  |  |  |  |  |
Transaction fee | $ 100 |  |  |  |  |  |
Option to extend the maturity date | item | 2 |  |  |  |  |  |
Period to extend the maturity date | 1 year |  |  |  |  |  |
Transaction fee receivable |  |  | $ 100 |  | $ 100 |  | $ 4,372
Interest rate | 10.00% |  |  |  |  |  |

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