Real Estate and Other Activities - Development Activities - Summary of Status on Current Development Projects (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($)
Business Acquisition [Line Items]
Commitment	$ 217,108
Costs Incurred as of March 31, 2022	93,994
Ernest Health Inc [Member] \| Stockton, California [Member]
Business Acquisition [Line Items]
Commitment	47,700
Costs Incurred as of March 31, 2022	$ 37,104
Estimated Rent Commencement Date	3Q 2022
Ernest Health Inc [Member] \| Texarkana, Texas [Member]
Business Acquisition [Line Items]
Commitment	$ 169,408
Costs Incurred as of March 31, 2022	$ 56,890
Estimated Rent Commencement Date	2Q 2024

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration