Intangibles - Gross Carrying Amount and Accumulated Amortization of Intangible Assets and Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Intangible assets:
Total intangible assets	$ 979,141	$ 880,137
Accumulated amortization:
Total accumulated amortization	(375,435)	(214,795)
Intangible assets, net	603,706	665,342
Intangible liabilities:
Below-market lease intangibles	190,067	167,032
Total intangible liabilities	190,067	167,032
Accumulated amortization:
Below-market lease amortization	(57,322)	(30,078)
Total accumulated amortization	(57,322)	(30,078)
Intangible liabilities, net	132,745	136,954
In-place Lease Intangibles [Member]
Intangible assets:
Total intangible assets	903,040	811,254
Accumulated amortization:
Total accumulated amortization	(347,590)	(200,629)
Intangible assets, net	555,450
Above-market Lease Intangibles [Member]
Intangible assets:
Total intangible assets	49,360	42,483
Accumulated amortization:
Total accumulated amortization	(18,102)	(10,977)
Intangible assets, net	31,258
Other Intangible Assets [Member]
Intangible assets:
Total intangible assets	26,741	26,400
Accumulated amortization:
Total accumulated amortization	$ (9,743)	$ (3,189)