v3.26.3
Nature of operations (Details)
3 Months Ended 9 Months Ended
Jul. 27, 2026
USD ($)
shares
Sep. 30, 2026
USD ($)
shares
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Sep. 30, 2026
USD ($)
shares
Dec. 31, 2025
USD ($)
shares
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Proceeds from September 2026 Offering, net of issuance costs         $ 162,147,000  
Common stock shares issued (in shares) | shares   11,473,285     11,473,285 3,047,675
Reverse stock split ratio 0.02          
Reverse stock splits, shares issued (in shares) | shares 0.7171          
Cash and cash equivalents   $ 268,860,000     $ 268,860,000 $ 99,994,000
Accumulated deficit   89,975,000     89,975,000 $ 70,994,000
Debt outstanding   0     0  
Net loss   $ 9,724,000 $ 6,512,000 $ 2,745,000 18,981,000  
Net cash used in operating activities         $ 96,030,000  
Pre - Fund Warrants            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Warrants outstanding (in shares) | shares 25,590,346          
Conversion of stock, options issued (in shares) | shares 2,002,285          
Pre-Merger Yarrow Stockholders            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Proceeds from September 2026 Offering, net of issuance costs $ 100,000,000.0          
Common stock shares issued (in shares) | shares 2,130,731          
Issuance of common stock to former stockholders of VYNE in connection with the closing of the reverse recapitalization (in shares) | shares 672,305