Organization and Significant Accounting Policies - Components of Revenue Streams, Timing of Satisfying Performance Obligations, and Amounts (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Schedule of management, transaction, and other fees [Line Items]
Management, transaction, and other fees	$ 7,106	$ 6,499	$ 13,144	$ 13,183
Property management services [Member]
Schedule of management, transaction, and other fees [Line Items]
Management, transaction, and other fees	3,487	3,310	$ 6,945	6,928
Timing of satisfaction of performance obligations			Over time
Asset management services [Member]
Schedule of management, transaction, and other fees [Line Items]
Management, transaction, and other fees	1,648	1,669	$ 3,277	3,425
Timing of satisfaction of performance obligations			Over time
Leasing services [Member]
Schedule of management, transaction, and other fees [Line Items]
Management, transaction, and other fees	1,096	1,171	$ 1,814	2,167
Timing of satisfaction of performance obligations			Point in time
Other transaction fees [Member]
Schedule of management, transaction, and other fees [Line Items]
Management, transaction, and other fees	$ 875	$ 349	$ 1,108	$ 663
Timing of satisfaction of performance obligations			Point in time