Fee and Other Income - Summary of Amount Receivable from Customers under Various Fee Agreement (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2020	$ 17,502
Balance as of December 31, 2021	15,582
Revenue from Contract with Customers Under Various Fee Agreements [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2020	5,179
Balance as of December 31, 2021	3,206
(Decrease) increase	(1,973)
Revenue from Contract with Customers Under Various Fee Agreements [Member] | Asset Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2020	1,949
Balance as of December 31, 2021	2,072
(Decrease) increase	123
Revenue from Contract with Customers Under Various Fee Agreements [Member] | Property Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2020	793
Balance as of December 31, 2021	686
(Decrease) increase	(107)
Revenue from Contract with Customers Under Various Fee Agreements [Member] | Acquisition Disposition Leasing And Other [Member]
Disaggregation Of Revenue [Line Items]
Balance as of December 31, 2020	2,437
Balance as of December 31, 2021	448
(Decrease) increase	$ (1,989)