Intangible Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets and Liabilities

The following table summarizes our intangible assets (acquired above-market leases and acquired in-place leases) and intangible liabilities (acquired below-market leases) and the related amortization as of the dates and for the periods set forth below.

	As of December 31,
(Amounts in thousands)	2018			2017
Intangible assets:
Gross amount	$	515,889		$	553,063
Accumulated amortization		(245,444	)		(200,857	)
	$	270,445		$	352,206
Intangible liabilities:
Gross amount	$	185,191		$	205,101
Accumulated amortization		(89,200	)		(75,073	)
	$	95,991		$	130,028

	For the Year Ended December 31,
(Amounts in thousands)	2018		2017		2016
Amortization of above and below-market leases, net (component    of “rental income”)	$	16,059	$	19,523	$	9,536
Amortization of acquired in-place leases (component of “depreciation    and amortization”)	$	58,814	$	76,016	$	94,935

Schedule of Estimated Annual Amortization of Acquired Below-Market Leases, Net of Acquired Above-Market Leases and In Place Leases

The following table sets forth annual amortization of acquired above and below-market leases, net and amortization of acquired in-place leases for each of the five succeeding years commencing from January 1, 2019.

(Amounts in thousands) For the Year Ending December 31,	Above and Below-Market Leases, Net		In-Place Leases
2019	$	11,851	$	49,378
2020		6,654		38,738
2021		3,361		28,150
2022		892		23,598
2023		4,407		18,917