Condensed Combined Balance Sheets for LLCs/LPs Accounted Under Equity Method (Detail) - USD ($) $ in Thousands		Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Total Assets		$ 517,681		$ 494,009
Equity		151,811	$ 155,364	159,005	$ 162,394	$ 166,240	$ 181,734
Total Liabilities and Equity		517,681		494,009
Investments in LLCs before amounts included in accrued expenses and other liabilities		23,123		4,278
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule Of Equity Method Investments [Line Items]
Net property, including construction in progress		42,789		42,374
Other assets	[1]	9,484		8,818
Total Assets		52,273		51,192
Other liabilities	[1]	6,966		9,402
Mortgage notes payable, non-recourse to us		22,133		39,735
Advances payable to us	[2]	3,500
Equity		19,674		2,055
Total Liabilities and Equity		52,273		51,192
Investments in LLCs before amounts included in accrued expenses and other liabilities		23,123		4,278
Amounts included in accrued expenses and other liabilities		(1,896)		(3,020)
Our share of equity in LLCs, net		$ 21,227		$ 1,258

[1] Other assets and other liabilities as of both September 30, 2021 and December 31, 2020 include approximately $4.3 million of right-of-use land assets and right-of-use land liabilities related to ground leases whereby the LLC/LP is the lessee, with third party lessors, including subsidiaries of UHS.

[2] Consists of a 7.25% member loan to FTX MOB Phase II, LP with a maturity date of March 1, 2023.