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License Revenue (Tables)
9 Months Ended
Sep. 30, 2023
Revenue from Contract with Customer [Abstract]  
Schedule of Revenue by Geographic Locations
Revenue comprised of license revenue for the three and nine months ended September 30, 2023, and 2022 and is represented in the table below by geographical location (in thousands):
Three Months Ended September 30,
Nine Months Ended September 30,
2023202220232022
License revenue
United Kingdom$346 $60 $346 $60 
United States$60 $2,309 $1,352 $2,309 
Total license revenue$406 $2,369 $1,698 $2,369