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Collaboration Agreement with AbbVie - Change in deferred revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2023 | Jun. 30, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |
Deferral of revenue |  | $ 23,373
Recognition of unearned revenue | $ 4,263 | 6,627
Collaboration agreement with AbbVie |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |
Balance at the beginning of the period | 27,636 |
Deferral of revenue |  | 30,000
Recognition of unearned revenue | 4,263 | 6,627
Balance at the end of the period | $ 23,373 | $ 23,373

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044 + Details
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