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Restructuring | 12 Months Ended
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Dec. 31, 2024
Restructuring and Related Activities [Abstract] |
Restructuring | 15. Restructurings In 2022, we implemented a restructuring plan to reduce operating costs and reduced our workforce by approximately 100 employees. We incurred aggregate restructuring costs of $2.0 million, all of which was recognized during the year ended December 31, 2022. These costs primarily related to one-time termination benefits and ongoing benefit arrangements, both of which included severance payments and extended benefits coverage support and were contingent upon the impacted employees’ execution and non-revocation of separation agreements. Our aggregate restructuring costs also included certain contract termination costs. The activities related to this reduction in workforce were primarily completed in March 2022 and the $2.0 million aggregate restructuring costs were paid as of December 31, 2022. During the three months ended March 31, 2024, we implemented a restructuring plan to better align our organization to our two operating segments: MRD and Immune Medicine. We incurred aggregate restructuring costs of $1.0 million, primarily related to one-time termination benefits and ongoing benefit arrangements. During the three months ended June 30, 2024, we implemented additional restructuring initiatives which impacted certain planned software enhancements and resulted in the consolidation of certain research and development workflows. The impacted software enhancements were primarily associated with our laboratory information management systems. As part of these restructurings, we had long-lived assets that were no longer being utilized and we vacated certain leased space in South San Francisco, California. As such, we assessed the related assets for impairment by first comparing their carrying amounts to the future net undiscounted cash flows projected to be generated over their remaining lease terms or depreciable lives, as applicable. The carrying amounts were all found to be unrecoverable, thus we assessed the fair values of the assets. The extent to which the carrying amounts of the assets exceed their fair values represents the impairment costs to be recognized. As a result of our assessments, we recognized $7.2 million of impairment charges. Of the $7.2 million charges recognized, $1.1 million and $3.3 million relates to the right-of-use asset and related long-lived assets (namely laboratory equipment and leasehold improvements), respectively, associated with certain of our leased space in South San Francisco, California. The remaining $2.8 million recognized relates to the impairment of long-lived assets associated with our halted software enhancements. We also incurred an additional $0.7 million in restructuring costs primarily related to one-time termination benefits and ongoing benefit arrangements. During the six months ended December 31, 2024, we incurred an additional $0.3 million in aggregate restructuring costs, which primarily related to one-time termination benefits and ongoing benefit arrangements. In total, we recognized restructuring costs of $9.2 million during the year ended December 31, 2024. The activities and payments related to these restructurings were completed and paid as of December 31, 2024.

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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/420/tableOfContent Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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