Real Estate and Intangibles - Schedule of Real Estate and Intangibles (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Real estate properties, net
Land	$ 219,933
Building and improvements	2,157,087
Acquired tenant improvements	80,051
Construction in progress	26,811
Accumulated depreciation	(228,641)
Total Real estate properties, net	2,255,241	$ 2,208,661
Intangible assets, net
Accumulated amortization	(177,404)
Total Intangible assets, net	162,351
Intangible liabilities, net
Intangible Liabilities, Below market leases	(73,602)
Intangible Liabilities, Accumulated amortization	49,864
Total Intangible liabilities, net	(23,738)
In-place leases [Member]
Intangible assets, net
Above market leases	259,223
Acquired Leasing Commissions [Member]
Intangible assets, net
Above market leases	62,643
Above Market Leases [Member]
Intangible assets, net
Above market leases	$ 17,889

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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