Intangibles - Gross Carrying Amount and Accumulated Amortization of Intangible Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Intangible assets:
Total intangible assets	$ 1,185,901	$ 1,176,371
Accumulated amortization:
Total accumulated amortization	(535,633)	(438,112)
Intangible assets, net	650,268	738,259
Intangible liabilities:
Below-market lease intangibles	195,474	194,158
Total intangible liabilities	195,474	194,158
Accumulated amortization:
Below-market lease amortization	(73,380)	(65,519)
Total accumulated amortization	(73,380)	(65,519)
Intangible liabilities, net	122,094	128,639
In-place Lease Intangibles [Member]
Intangible assets:
Total intangible assets	1,104,056	1,094,561
Accumulated amortization:
Total accumulated amortization	(501,777)	(407,256)
Intangible assets, net	602,279
Above-market Lease Intangibles [Member]
Intangible assets:
Total intangible assets	49,243	49,261
Accumulated amortization:
Total accumulated amortization	(22,440)	(20,291)
Intangible assets, net	26,803
Other Intangible Assets [Member]
Intangible assets:
Total intangible assets	32,602	32,549
Accumulated amortization:
Total accumulated amortization	$ (11,416)	$ (10,565)