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Intangible Assets and Goodwill (Tables) | 6 Months Ended
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Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of changes in carrying amount of goodwill | The following tables present goodwill information for the six months ended June 30, 2021:
(In thousands) |  | As of December 31, 2020 |  | Adjustment to Goodwill |  |  |  |  |  |  |  | As of June 30, 2021
Total goodwill |  | $ | 183,222 |  |  | $ | — |  |  |  |  |  |  |  |  | $ | 183,222 |
|  | As of June 30, 2021
(In thousands) |  | Gross Carrying Amount |  | Accumulated Impairment Losses |  |  |  | Net Carrying Amount
Total goodwill |  | $ | 204,992 |  |  | $ | (21,770) |  |  |  |  | $ | 183,222 |
Components of intangible assets | The components of the Company’s intangible assets as of June 30, 2021 and December 31, 2020 were as follows:
|  |  | As of June 30, 2021
(In thousands) | Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  |  |  | Net Carrying Amount
Existing technology | 3 to 10 years |  | $ | 265,389 |  |  | $ | (239,875) |  |  |  |  | $ | 25,514 |
Customer contracts and contractual relationships | 0.5 to 10 years |  | 36,293 |  |  | (34,604) |  |  |  |  | 1,689 |
Non-compete agreements and trademarks | 3 years |  | 300 |  |  | (300) |  |  |  |  | — |
Total intangible assets |  |  | $ | 301,982 |  |  | $ | (274,779) |  |  |  |  | $ | 27,203 |
|  |  | As of December 31, 2020
(In thousands) | 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) |  |  | — |
In-process research and development | Not applicable |  | 1,600 |  |  | — |  |  | 1,600 |
Total intangible assets |  |  | $ | 301,982 |  |  | $ | (265,495) |  |  | $ | 36,487 |
Estimated future amortization of intangible assets | The estimated future amortization of intangible assets as of June 30, 2021 was as follows (in thousands):
Years Ending December 31: |  | Amount
2021 (remaining six months) |  | $ | 5,540 |
2022 |  | 7,964 |
2023 |  | 7,260 |
2024 |  | 5,812 |
2025 |  | 520 |
Thereafter |  | 107 |
Total intangible assets |  | $ | 27,203 |

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