XML 39 R26.htm IDEA: XBRL DOCUMENT v3.22.2
Collaboration and Licensing Agreements (Tables)
 6 Months Ended
Jun. 30, 2022
Collaboration and Licensing Agreements  
Schedule of Changes in Deferred Revenue
The following tables present changes in our current and non-current deferred revenue balances during the reporting period. The June 30, 2022 and 2021 current deferred revenue balance is attributable entirely to the 2019 KKC Agreement and the non-current deferred revenue balances are attributable entirely to the 2017 KKC Agreement (in thousands):
Deferred revenue - current20222021
Balance at January 1,$— $4,177 
Decreases due to revenue recognized in the period for which cash has been received— (2,765)
Balance at June 30,$— $1,412 

Deferred revenue - non-current20222021
Balance at January 1,$4,727 $— 
Increases due to cash received during the period3,829 2,947 
Increases to amounts invoiced, for which cash has not yet been received3,865 — 
Balance at June 30,$12,421 $2,947