Deferred Revenue and Acquisition-Related Intangible Liabilities, net

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Deferred Revenue and Acquisition-Related Intangible Liabilities, net

Deferred Revenue and Acquisition-Related Intangible Liabilities, net

Deferred revenue and acquisition-related intangible liabilities, net consisted of the following at December 31, 2019 and 2018:

	December 31,
	2019		2018
	(in thousands)
Deferred revenue related to tenant-funded tenant improvements	$	96,271	$	104,558
Other deferred revenue	19,125		15,950
Acquisition-related intangible liabilities, net (1)	24,092		29,138
Total	$	139,488	$149,646

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(1) See Note 5 “Deferred Leasing Costs and Acquisition-Related Intangible Assets and Liabilities, net” for additional information regarding our acquisition-related intangible liabilities.

Deferred Revenue Related to Tenant-funded Tenant Improvements

During the years ended December 31, 2019, 2018, and 2017, $19.2 million, $18.4 million and $16.8 million, respectively, of deferred revenue related to tenant-funded tenant improvements was amortized and recognized as rental income. The following is the estimated amortization of deferred revenue related to tenant-funded tenant improvements as of December 31, 2019 for the next five years and thereafter:

Year Ending	(in thousands)
2020	$	16,935
2021	15,426
2022	14,320
2023	12,553
2024	10,318
Thereafter	26,719
Total	$	96,271