Intangible Assets, Net - Details of Intangible Assets, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Total, at cost	$ 18,674	$ 13,805
Less: accumulated amortization	(3,569)	(3,169)
Intangible assets, net	15,105	10,636
Anchor Tenant Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Total, at cost	1,761	1,761
In-Place Leases [Member]
Finite Lived Intangible Assets [Line Items]
Total, at cost	4,215	4,215
Policy Renewal Rights [Member] | United [Member]
Finite Lived Intangible Assets [Line Items]
Total, at cost	12,384	7,634
Non Compete Agreement [Member] | United [Member]
Finite Lived Intangible Assets [Line Items]
Total, at cost	$ 314	$ 195