Real Estate and Other Activities - Development Activities - Summary of Status on Current Development Projects (Detail) $ in Thousands	9 Months Ended
Sep. 30, 2021 USD ($)
Business Acquisition [Line Items]
Commitment	$ 95,629
Costs Incurred as of September 30, 2021	64,534
Ernest Health Inc [Member] \| Bakersfield, California [Member]
Business Acquisition [Line Items]
Commitment	47,929
Costs Incurred as of September 30, 2021	$ 39,544
Estimated Rent Commencement Date	4Q 2021
Ernest Health Inc [Member] \| Stockton, California [Member]
Business Acquisition [Line Items]
Commitment	$ 47,700
Costs Incurred as of September 30, 2021	$ 24,990
Estimated Rent Commencement Date	2Q 2022

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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