Condensed Combined Balance Sheets for LLCs/LPs Accounted Under Equity Method (Parenthetical) (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Schedule Of Equity Method Investments [Line Items]
Right-of-use land assets	$ 11,836,000	$ 11,457,000
Right-of-use land liabilities	11,836,000	11,457,000
Limited Liability Companies
Schedule Of Equity Method Investments [Line Items]
Right-of-use land assets	653,000	654,000
Right-of-use land liabilities	$ 654,000	$ 653,000
FTX MOB Phase II limited partnership
Schedule Of Equity Method Investments [Line Items]
Maturity date	Mar. 01, 2023