v3.26.1
Commitments & Contingencies - Additional Information (Details)
 3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Feb. 25, 2026
USD ($)
$ / shares
Dec. 31, 2025
USD ($)
Jun. 30, 2026
USD ($)
Day
$ / shares
shares
Dec. 31, 2024
USD ($)
Jun. 30, 2026
USD ($)
Day
$ / shares
shares
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Feb. 06, 2025
USD ($)
Commitments and Contingencies [Line Items]                  
Conversion of stock, conversion ratio     one-for-one            
Conversion of stock, par value per share | $ / shares     $ 0.0001   $ 0.0001        
Common stock issuable as closing consideration description     $10.00. Each OHBP Shareholder will receive a number of shares of New OHB Common Stock equal to the Exchange Ratio (as defined in the Business Combination Agreement) multiplied by the number of OHBP Shares held by such OHBP Shareholder.            
Proceeds from issuance of common stock     $ 25,000            
OHBP SAFEs [Member]                  
Commitments and Contingencies [Line Items]                  
Debt instrument, face amount     $ 45,000,000   $ 45,000,000        
Bearing interest rate     8.00%   8.00%        
Backstop Agreement [Member]                  
Commitments and Contingencies [Line Items]                  
Backstop committed shares | shares     7,500,000   7,500,000        
Backstop subscription price per share | $ / shares     $ 10   $ 10        
Maximum backstop funding commitment amount     $ 75,000,000   $ 75,000,000        
Subscription Agreement [Member]                  
Commitments and Contingencies [Line Items]                  
PIPE purchase price per share | $ / shares     $ 10   $ 10        
Per share exercise price | $ / shares     0.0001   0.0001        
Purchase price per Pre-Funded Warrant | $ / shares     $ 10   $ 10        
Proceeds from issuance of common stock     $ 55,000,000            
Investor Rights Agreement [Member]                  
Commitments and Contingencies [Line Items]                  
Resale registration statement filing deadline in days | Day     30   30        
Underwriting Agreement [Member]                  
Commitments and Contingencies [Line Items]                  
Underwriting discount per share | $ / shares $ 0.1   $ 0.1            
Underwriting discount $ 750,000   $ 750,000            
Deferred underwriting commission per share | $ / shares $ 0.3   $ 0.3   $ 0.3        
Deferred underwriting commission $ 2,250,000   $ 2,250,000   $ 2,250,000        
OHB Pediatrics Ltd [Member]                  
Commitments and Contingencies [Line Items]                  
Upfront License Fee           $ 500,000 $ 500,000    
Payment Of Development Fee   $ 3,500,000       53,500,000 53,500,000    
Research and development   1,000,000   $ 342,000 $ 10,695,000 $ 2,210,000 14,302,000 $ 342,000  
Payment Of Annual Net Sales Targets   $ 105,000,000         105,000,000    
Amount of Aggregate Licensed Assets Cap                 $ 55,000,000
OHB Pediatrics Ltd [Member] | Roche License Agreement [Member]                  
Commitments and Contingencies [Line Items]                  
Research and development             $ 1,000,000    
OHB Pediatrics Ltd [Member] | Minimum [Member]                  
Commitments and Contingencies [Line Items]                  
Percentage Of Royalty Country By Country         9.00%   9.00%    
OHB Pediatrics Ltd [Member] | Maximum [Member]                  
Commitments and Contingencies [Line Items]                  
Percentage Of Royalty Country By Country         14.00%   14.00%