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Collaboration and Licensing Agreements (Tables) | 3 Months Ended
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Mar. 31, 2023
Collaboration and Licensing Agreements |
Schedule of Deferred Revenue Balances | The following tables present changes in our current and non-current deferred revenue balances during the reporting period, which are all attributable to the 2017 Kyowa Kirin Agreement (in thousands):
Deferred revenue - current | 2023 |  | 2022
Balance at January 1, | $ | 4,211 |  |  | $ | — |
Increases due to amounts reclassified from non-current, to be recognized in the next twelve months | 809 |  |  |
Increases to amounts invoiced, for which cash has not yet been received | 525 |  |  | — |
Balance at March 31, | $ | 5,545 |  |  | $ | — |
Deferred revenue - non-current | 2023 |  | 2022
Balance at January 1, | $ | 9,025 |  |  | $ | 4,727 |
Increases to amounts invoiced, for which cash has not yet been received | 3,282 |  |  | 3,829 |
Increase due to unbilled prepayments recorded during the period | — |  |  | 7 |
Decreases due to amounts reclassified as current, to be recognized in the next twelve months | (809) |  |  | — |
Balance at March 31, | $ | 11,498 |  |  | $ | 8,563 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + Details
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