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Trade Receivables - Summary of Receivables (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | $ 1,677 | $ 8,268
Billed |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | 1,564 | 7,959
Unbilled |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | 113 | 309
U.S. Department of Health and Human Services, net |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | 113 | 7,502
U.S. Department of Health and Human Services, net | Billed |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | 0 | 7,218
U.S. Department of Health and Human Services, net | Unbilled |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | 113 | 284
Royalty receivables from partners |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | 1,564 | 741
Royalty receivables from partners | Billed |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | 1,564 | 741
Royalty receivables from partners | Unbilled |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables | $ 0 | 0
Other collaborations |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables |  | 25
Other collaborations | Billed |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables |  | 0
Other collaborations | Unbilled |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total receivables |  | $ 25

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- Definition The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481372/852-10-55-10 + Details
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