Table of Contents Core Logic, Inc. Notes to the Consolidated Financial Statements For the Years Ended December 31, 2020, 2019 and 2018 Note 5 - Other Intangible Assets, Net Other intangible assets, net as of December 31, 2020 and 2019 consist of the following: Amortization expense for other intangible assets was $56.7 million, $60.0 million and $63.4 million for the years ended December 31, 2020, 2019 and 2018, respectively. No impairment losses for other intangible assets were recorded for the year ended December 31, 2020. Impairment losses of $35.6 million were recorded for the year ended December 31, 2019. No impairment losses for other intangible assets were recorded for the year ended December 31, 2018. See  Note 10 - Fair Value  for further discussion. Estimated amortization expense for other intangible assets anticipated for the next five years is as follows: 2020 2019 (in thousands) Gross Accumulated Amortization Net Gross Accumulated Amortization Net Client lists $ 644,000  $ (377,409) $ 266,591  $ 645,770  $ (340,168) $ 305,602  Non-compete agreements 26,763  (21,570) 5,193  26,409  (16,249) 10,160  Tradenames and licenses 127,718  (78,581) 49,137  126,405  (66,538) 59,867  Total $ 798,481  $ (477,560) $ 320,921  $ 798,584  $ (422,955) $ 375,629  (in thousands) 2021 $ 54,039  2022 52,133  2023 43,729  2024 35,476  2025 31,925  Thereafter 103,619  Total $ 320,921  67