XML 42 R33.htm IDEA: XBRL DOCUMENT v3.23.1
Property and equipment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Property and equipment      
Less accumulated depreciation $ (1,131)   $ (1,500)
Property and equipment, net     32
Maximum      
Property and equipment      
Depreciation 100 $ 100  
Office equipment and furniture      
Property and equipment      
Property and equipment, gross 152   152
Laboratory equipment      
Property and equipment      
Property and equipment, gross     401
Leasehold improvements      
Property and equipment      
Property and equipment, gross $ 979   $ 979