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Deferred Revenue and Acquisition-Related Intangible Liabilities, net | 12 Months Ended
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Dec. 31, 2020
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, 2020 and 2019:
| December 31,
| 2020 |  | 2019
| (in thousands)
Deferred revenue related to tenant-funded tenant improvements | $ | 88,645 |  |  | $ | 96,271 |
Other deferred revenue | 26,533 |  |  | 19,125 |
Acquisition-related intangible liabilities, net (1) | 13,345 |  |  | 24,092 |
Total | $ | 128,523 |  |  | $139,488
_____________________ (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, 2020, 2019, and 2018, $22.5 million, $19.2 million and $18.4 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, 2020 for the next five years and thereafter:
Year Ending | (in thousands)
2021 | $ | 16,216 |
2022 | 15,188 |
2023 | 13,367 |
2024 | 11,325 |
2025 | 8,564 |
Thereafter | 23,985 |
Total | $ | 88,645 |

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- Definition The entire disclosure for deferred revenues and acquisition-related liabilities at the end of the reporting period, and description and amounts of significant changes that occurred during the reporting period. + References No definition available. + Details
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