Real Estate and Other Activities - Halsen Healthcare - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Dec. 17, 2019	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Credit loss reserve					$ 8,399
Halsen Healthcare [Member]
Business Acquisition [Line Items]
Credit loss reserve			$ 40,000	$ 40,000
Write off of billed and straight-line rent receivables			$ 2,500
Watsonville, California [Member] | Halsen Healthcare [Member] | Maximum [Member]
Business Acquisition [Line Items]
Percentage of assets fully recoverable				0.50%
Acute Care Hospital [Member]
Business Acquisition [Line Items]
Purchase price of acquisition	$ 700,000
Acute Care Hospital [Member] | Watsonville, California [Member]
Business Acquisition [Line Items]
Purchase price of acquisition		$ 40,000