Identified Intangible Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Finite-Lived Intangible Assets and Liabilities

Schedule of Identified Intangible Assets and Intangible Liabilities

The following summarizes our identified intangible assets (primarily above-market leases) and liabilities (primarily below-market leases) as of December 31, 2018 and 2017.

(Amounts in thousands)	Balance as of December 31,
	2018			2017
Identified intangible assets:
Gross amount	$	308,895		$	310,097
Accumulated amortization	(172,114		)	(150,837		)
Total, net	$	136,781		$	159,260
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	503,373		$	530,497
Accumulated amortization	(341,779		)	(324,897		)
Total, net	$	161,594		$	205,600

Below Market Leases Net Of Above Market Leases

Finite-Lived Intangible Assets and Liabilities

Schedule of future amortization expense of intangible assets

Estimated annual amortization of acquired below-market leases, net of acquired above-market leases, for each of the five succeeding years commencing January 1, 2019 is as follows:

(Amounts in thousands)
2019	$	24,661
2020	23,591
2021	18,857
2022	15,746
2023	13,215

Other Identified Intangible Assets

Finite-Lived Intangible Assets and Liabilities

Schedule of future amortization expense of intangible assets

Estimated annual amortization of all other identified intangible assets including acquired in-place leases, customer relationships, and third party contracts for each of the five succeeding years commencing January 1, 2019 is as follows:

(Amounts in thousands)
2019	$	13,726
2020	13,513
2021	11,974
2022	10,244
2023	10,157

Tenant Under Ground Leases

Finite-Lived Intangible Assets and Liabilities

Schedule of future amortization expense of intangible assets

Estimated annual amortization of these below-market leases, net of above-market leases, for each of the five succeeding years commencing January 1, 2019 is as follows:

(Amounts in thousands)
2019	$	1,747
2020	1,747
2021	1,747
2022	1,747
2023	1,747