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Liquidity and Capital Resources (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]          
Net loss $ 14,717 $ 16,771 $ 557,093 $ 38,168  
Net cash flows used in operating activities     42,404 $ 38,218  
Accumulated deficit 935,423   935,423   $ 378,330
Cash and cash equivalents 42,116   42,116   348,607
Short-term investments 172,898   172,898   0
Current and long-term research and development tax credits 5,120   5,120    
Promissory note payable to a related party $ 100,000   $ 100,000   $ 494,540