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Goodwill and Intangible Assets | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Intangible Assets | 8. Goodwill and Intangible Assets There have been no changes in the carrying amount of goodwill since its recognition in 2015. In conjunction with our organizational realignment in 2024, we allocated goodwill among our two reporting units using a relative fair value approach. Goodwill allocated to the MRD and Immune Medicine reporting units as of December 31, 2024 was $96.4 million and $22.6 million, respectively. Intangible assets subject to amortization as of December 31, 2024 and 2023 consisted of the following (in thousands):
|  | December 31, 2024 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Acquired developed technology |  | $ | 20,000 |  |  | $ | (16,641 | ) |  | $ | 3,359 |
Purchased intellectual property |  |  | 325 |  |  |  | (259 | ) |  |  | 66 |
Balance at December 31, 2024 |  | $ | 20,325 |  |  | $ | (16,900 | ) |  | $ | 3,425 |
|  | December 31, 2023 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Acquired developed technology |  | $ | 20,000 |  |  | $ | (14,970 | ) |  | $ | 5,030 |
Purchased intellectual property |  |  | 325 |  |  |  | (227 | ) |  |  | 98 |
Balance at December 31, 2023 |  | $ | 20,325 |  |  | $ | (15,197 | ) |  | $ | 5,128 |
The developed technology was acquired in connection with our acquisition of Sequenta, Inc. in 2015. The remaining balance of the acquired developed technology and the purchased intellectual property is expected to be amortized over the next 2.0 years, approximately. As of December 31, 2024, expected future amortization expense for intangible assets was as follows (in thousands):
2025 |  | $ | 1,699 |
2026 |  |  | 1,699 |
2027 |  |  | 27 |
Total future amortization expense |  | $ | 3,425 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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