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Notes Receivable, Net - Schedule of Notes Receivable (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) NotesReceivable	Dec. 31, 2020 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Total notes receivable	$ 102,100	$ 102,100
Allowance for credit loss	(690)	(650)
Notes receivable, net	$ 101,410	101,450
Number | NotesReceivable	7
Core Portfolio
Accounts Notes And Loans Receivable [Line Items]
Total notes receivable	$ 96,794	96,794
Number | NotesReceivable	6
Core Portfolio | Minimum
Accounts Notes And Loans Receivable [Line Items]
Maturity Date	2020-04
Interest Rate	2.65%
Core Portfolio | Maximum
Accounts Notes And Loans Receivable [Line Items]
Maturity Date	2027-12
Interest Rate	9.00%
Fund III | Fund Portfolio
Accounts Notes And Loans Receivable [Line Items]
Total notes receivable	$ 5,306	$ 5,306
Number | NotesReceivable	1
Maturity Date	2020-07
Interest Rate	18.00%

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