Notes Receivable and Current Expected Credit Losses - Schedule of Interest on the Mezzanine Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	$ 3,690	$ 3,490	$ 10,823	$ 10,410
Mezzanine loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	3,496	3,372	10,257	10,070
Other interest income
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	194	118	566	340
Nexton Multifamily | Mezzanine loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	0	680	0	1,966
Solis City Park II | Mezzanine loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	740	329	2,142	554
Solis Gainesville II | Mezzanine loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	717	0	1,964	0
Solis Kennesaw | Mezzanine loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	1,164	0	1,629	0
Solis Peachtree Corners | Mezzanine loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	617	0	617	0
The Allure at Edinburgh | Mezzanine loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	258	0	258	0
The Interlock | Mezzanine loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	$ 0	$ 2,363	$ 3,647	$ 7,550