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Revenue (Tables)
6 Months Ended
Jun. 30, 2022
Revenue  
Summary of revenue categories

Revenue comprises the following categories (in thousands):

Three months ended

 

Six months ended

 

June 30, 

June 30, 

     

2022

     

2021

2022

     

2021

Development revenue

 

$

5,538

 

$

3,095

$

9,113

 

$

3,529

 

$

5,538

 

$

3,095

$

9,113

 

$

3,529