Summary of Significant Accounting Policies - Schedule of Unpaid Claims Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Tenant Reinsurance Claims:
Unpaid claims liability at beginning of year	$ 8,294	$ 8,109	$ 7,326
Claims and claim adjustment expense for claims incurred in the current year	16,901	14,534	16,280
Claims and claim adjustment expense (benefit) for claims incurred in the prior years	122	(1,351)	98
Payments for current year claims	(11,913)	(9,697)	(11,352)
Payments for prior year claims	(4,292)	(3,301)	(4,243)
Unpaid claims liability at the end of the year	$ 9,112	$ 8,294	$ 8,109