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Investments - Investments in Variable Interest Entities (Detail) - USD ($) | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | $ 5,200,000 | $ 5,500,000
Receivables from related parties | 9,002,000 | 1,444,000
Aqua | Subordinated loan |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | 400,000 |
Receivables from related parties | 1,000,000 |
Variable interest entity, not primary beneficiary |  |
Variable Interest Entity [Line Items] |  |
Investment | 1,798,000 | 2,530,000
Maximum Exposure to Loss | $ 2,228,000 | $ 2,959,000

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