Lease Intangible Assets and Liabilities - Schedule of Future Amortization of Intangibles (Detail) $ in Thousands	Mar. 31, 2021 USD ($)
Finite-Lived Intangible Assets [Line Items]
Remainder of 2021	$ 152
2022	203
2023	203
2024	203
2025	203
2026	203
Thereafter	9,433
Above-Market Leases, Net [Member]
Finite-Lived Intangible Assets [Line Items]
Remainder of 2021	10
2022	(58)
2023	3
2024	27
2025	97
2026	190
Thereafter	2,084
In-Place Leases, Net [Member]
Finite-Lived Intangible Assets [Line Items]
Remainder of 2021	2,260
2022	2,787
2023	1,921
2024	1,385
2025	1,077
2026	724
Thereafter	$ 5,850