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Trade Receivables | 9 Months Ended
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Sep. 30, 2023
Receivables [Abstract] |
Trade Receivables | Trade Receivables Product Sales Receivables from product sales are recorded for amounts due to the Company related to sales of ORLADEYO and RAPIVAB. At September 30, 2023 and December 31, 2022, receivables net of reserves related to sales of ORLADEYO were $51,837 and $41,508, respectively. A returns reserve related to sales of ORLADEYO of $124 was recorded as of September 30, 2023. No reserve or allowance amounts were recorded as of December 31, 2022. At September 30, 2023 and December 31, 2022, receivables related to sales of RAPIVAB were $132 and $823, respectively. Collaborations Receivables from collaborations were as follows (in thousands):
| September 30, 2023
| Billed |  | Unbilled |  | Total
U.S. Department of Health and Human Services, net | $ | — |  |  | $ | 113 |  |  | $ | 113 |
Royalty receivables from partners | 1,564 |  |  | — |  |  | 1,564 |
Total receivables | $ | 1,564 |  |  | $ | 113 |  |  | $ | 1,677 |
| December 31, 2022
| Billed |  | Unbilled |  | Total
U.S. Department of Health and Human Services, net | $ | 7,218 |  |  | $ | 284 |  |  | $ | 7,502 |
Royalty receivables from partners | 741 |  |  | — |  |  | 741 |
Other collaborations | — |  |  | 25 |  |  | 25 |
Total receivables | $ | 7,959 |  |  | $ | 309 |  |  | $ | 8,268 |
As of September 30, 2023 and December 31, 2022, the Company maintained a reserve of $522 and $437, respectively, related to royalties associated with Green Cross.

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