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