Notes Receivable, Net - Schedule of Notes Receivable (Parenthetical) (Details)		Jun. 30, 2021 USD ($) NotesReceivable	Dec. 31, 2020 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Number of notes receivable | NotesReceivable		8
Notes receivable | $		$ 118,100,000	$ 102,100,000
Core Portfolio
Accounts Notes And Loans Receivable [Line Items]
Number of notes receivable | NotesReceivable	[1]	7
Notes receivable | $	[1]	$ 112,794,000	96,794,000
OP Unit Holders
Accounts Notes And Loans Receivable [Line Items]
Number of notes receivable | NotesReceivable		2
OP Unit Holders | Core Portfolio
Accounts Notes And Loans Receivable [Line Items]
Notes receivable | $		$ 6,500	$ 6,500

[1] Includes two notes receivable from OP Unit holders, with balances totaling $6.5 million at June 30, 2021 and December 31, 2020