XML 72 R59.htm IDEA: XBRL DOCUMENT v3.22.4
Geographic Information (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended 24 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue $ 0 $ 0 $ 0
Net loss (21,198) (18,887)  
Assets 27,501 42,587 27,501
Long Lived Assets, net 32 64 32
United Kingdom      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue 0 0  
Net loss (19,215) (17,263)  
Assets 9,281 6,443 9,281
Long Lived Assets, net 32 64 32
United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net loss (1,983) (1,624)  
Assets $ 18,220 36,144 $ 18,220
Long Lived Assets, net   $ 0