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Revenue Recognition - Summary of balances and activities in our contract asset account (Details)
$ in Thousands
 6 Months Ended
Jun. 30, 2023
USD ($)
Reclassification $ 71,307 [1]
Balance at End of Period 71,307
CpG 1018  
Balance at Beginning of Period 71,965 [2]
Additions (1) 7,199 [2]
Subtractions (2) (6,255) [2]
Reclassification (71,307) [1],[2]
Balance at End of Period $ 1,602 [2]
[1] The Clover contract asset was reclassified to long term assets to reflect the timing of expected long term demand for CpG 1018 adjuvant for Clover Product. See Note 6 for further discussion.
[2] The $1.6 million of contract asset is derived from our agreement with the DoD.