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Intangible Assets and Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of changes in carrying amount of goodwill | The following tables present goodwill information for the years ended December 31, 2020 and December 31, 2019:
(In thousands) |  | December 31, 2019 |  |  |  | Adjustment to Goodwill (1) |  |  |  | December 31, 2020
Total goodwill |  | $ | 183,465 |  |  |  |  | $ | (243) |  |  |  |  | $ | 183,222 |
______________________________________ (1) Working capital adjustments related to the acquisition of Northwest Logic, Inc. (“Northwest Logic”).
|  | As of December 31, 2020
(In thousands) |  | Gross Carrying Amount |  | Accumulated Impairment Losses |  | Net Carrying Amount
Total goodwill |  | $ | 204,992 |  |  | $ | (21,770) |  |  | $ | 183,222 |
(In thousands) |  | December 31, 2018 |  | Additions to Goodwill (1) |  | Divestiture of Goodwill (2) |  | Effect of Exchange Rates (3) |  | December 31, 2019
Total goodwill |  | $ | 207,178 |  |  | $ | 30,322 |  |  | $ | (54,494) |  |  | $ | 459 |  |  | $ | 183,465 |
______________________________________ (1) In August 2019, the Company acquired Northwest Logic, and in December 2019, the Company acquired the Secure Silicon IP and Protocols business from Verimatrix (the “Secure Silicon IP and Protocols business”), which resulted in the Company recognizing additional goodwill. Refer to Note 21, “Acquisitions,” for additional information. (2) Refer to Note 17, “Divestiture,” for additional information. (3) Effect of exchange rates relates to foreign currency translation adjustments for the period.
|  | As of December 31, 2019
(In thousands) |  | Gross Carrying Amount |  | Accumulated Impairment Losses |  | Net Carrying Amount
Total goodwill |  | $ | 205,235 |  |  | $ | (21,770) |  |  | $ | 183,465 |
Components of intangible assets | The components of the Company’s intangible assets as of December 31, 2020 and December 31, 2019 were as follows:
|  |  | As of December 31, 2020
(In thousands, except useful life) | Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Existing technology | 3 to 10 years |  | $ | 263,789 |  |  | $ | (230,950) |  |  | $ | 32,839 |
Customer contracts and contractual relationships | 0.5 to 10 years |  | 36,293 |  |  | (34,245) |  |  | 2,048 |
Non-compete agreements and trademarks | 3 years |  | 300 |  |  | (300) |  |  | — |
IPR&D | Not applicable |  | 1,600 |  |  | — |  |  | 1,600 |
Total intangible assets |  |  | $ | 301,982 |  |  | $ | (265,495) |  |  | $ | 36,487 |
|  |  | As of December 31, 2019
(In thousands, except useful life) | Useful Life |  | Gross Carrying Amount (1) (2) |  | Accumulated Amortization (1) (2) |  | Net Carrying Amount
Existing technology | 3 to 10 years |  | $ | 262,789 |  |  | $ | (213,354) |  |  | $ | 49,435 |
Customer contracts and contractual relationships | 0.5 to 10 years |  | 36,293 |  |  | (33,428) |  |  | 2,865 |
Non-compete agreements and trademarks | 3 years |  | 300 |  |  | (300) |  |  | — |
IPR&D | Not applicable |  | 2,600 |  |  | — |  |  | 2,600 |
Total intangible assets |  |  | $ | 301,982 |  |  | $ | (247,082) |  |  | $ | 54,900 |
_________________________________________ (1) In October 2019, the Company disposed of approximately $20.7 million of net intangible assets in connection with the sale of the legal entities comprising the Company’s Payments and Ticketing businesses. Refer to Note 17, “Divestiture,” for additional information. (2) In August 2019, the Company acquired Northwest Logic, and in December 2019, the Company acquired the Secure Silicon IP and Protocols business, which resulted in the Company recognizing additional intangible assets. Refer to Note 21, “Acquisitions,” for additional information.
Estimated future amortization expense of intangible assets | The estimated future amortization expense of intangible assets as of December 31, 2020 was as follows (in thousands):
Years Ending December 31: | Amount
2021 | $ | 14,611 |
2022 | 7,644 |
2023 | 6,940 |
2024 | 5,492 |
2025 | 200 |
Thereafter | — |
Total amortizable purchased intangible assets | 34,887 |
IPR&D | 1,600 |
Total intangible assets | $ | 36,487 |

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