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Fair Value Measurements - Assets/Liabilities Measured at Fair Value (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Cash and cash equivalents $ 51,184 $ 13,269
Processa common shares 4 25
Quoted Price in Active Markets for Identical Instruments Level 1    
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Cash and cash equivalents 1,314 1,340
Processa common shares 4 25
Significant Other Observable Inputs Level 2    
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Cash and cash equivalents $ 49,870 $ 11,929
Processa Pharmaceuticals, Inc    
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Shares to be issued under agreement 41