Condensed Combined Balance Sheets for LLCs/LPs Accounted Under Equity Method (Parenthetical) (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Schedule Of Equity Method Investments [Line Items]
Right-of-use land assets	$ 11,467,000	$ 11,495,000
Right-of-use land liabilities	11,467,000	11,495,000
Limited Liability Companies
Schedule Of Equity Method Investments [Line Items]
Right-of-use land assets	655,000	656,000
Right-of-use land liabilities	$ 655,000	$ 656,000
FTX MOB Phase II limited partnership
Schedule Of Equity Method Investments [Line Items]
Debt Instrument Maturity Date	2023-03