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Investments - Investments in Variable Interest Entities (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | $ 5,700,000 | $ 5,500,000
Receivables from related parties | 2,717,000 | 1,444,000
Aqua | Subordinated Loan |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss |  | 600,000
Receivables from related parties | 1,000,000 |
Cash proceeds from subordinated loan receivable | 400,000 |
Variable Interest Entities |  |
Variable Interest Entity [Line Items] |  |
Investment | 2,857,000 | 2,530,000
Maximum Exposure to Loss | $ 2,857,000 | $ 2,959,000

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