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Collaboration Agreements (Tables) | 12 Months Ended
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Dec. 31, 2021
Collaboration agreements |
Schedule of changes in the balances of our contract assets and liabilities and recognized revenue | The following table presents changes in the balances of our contract assets and liabilities during the years ended December 31, 2021 and December 31, 2020:
| Balance at Beginning of Period |  | Additions |  | Deductions |  | Balance at End of Period
Year ended December 31, 2021 |  |  |  |  |  |  |
Contract assets | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Contract liabilities: |  |  |  |  |  |  |
Deferred revenue | $ | 3,987 |  |  | $ | — |  |  | $ | 43 |  |  | $ | 3,944 |
| Balance at Beginning of Period |  | Additions |  | Deductions |  | Balance at End of Period
Year ended December 31, 2020 |  |  |  |  |  |  |
Contract assets | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Contract liabilities: |  |  |  |  |  |  |
Deferred revenue | $ | 4,815 |  |  | $ | — |  |  | $ | 828 |  |  | $ | 3,987 |
During the year ended December 31, 2021, the Company recognized the following revenues as a result of changes in the contract asset and the contract liability balances in the respective periods.
| Year ended December 31,
| 2021 |  | 2020
Revenue recognized in the period from: |  |  |
Amounts included in the contract liability at the beginning of the period | $ | 43 |  |  | $ | 828 |
Performance obligations satisfied in previous periods | $ | — |  |  | $ | — |

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- References No definition available. + Details
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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 http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
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