v3.26.1
Nature of Business (Details)
 1 Months Ended 3 Months Ended 12 Months Ended
Apr. 01, 2026
USD ($)
$ / shares
Jan. 06, 2026
USD ($)
Jan. 03, 2026
USD ($)
Dec. 01, 2025
USD ($)
May 07, 2025
USD ($)
Mar. 21, 2025
USD ($)
$ / shares
shares
Dec. 13, 2024
USD ($)
Jul. 28, 2023
USD ($)
Aug. 31, 2024
USD ($)
Mar. 31, 2026
USD ($)
$ / shares
shares
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
Dec. 31, 2021
USD ($)
Feb. 04, 2025
USD ($)
Mar. 31, 2023
USD ($)
$ / shares
shares
Nature of Business                                  
Option fee                 $ 150,000                
Subsequent fees                 $ 80,000                
Cash consideration transferrred               $ 8,000,000                  
Operating expenses               $ 2,400,000   $ 3,209,000 $ 1,538,000 $ 7,047,000 $ 5,628,000        
Equity investment in cash                                 $ 5,000,000
Preferred stock, par value (in dollars per share) | $ / shares                   $ 0   $ 0 $ 0        
Proceeds from stock purchase agreement                   $ 0 1,375,000 $ 1,375,000 $ 0        
Maximum amount of aggregate initial offering price                               $ 25,000,000  
Cash commission of gross proceeds of sales of common stock, percentage         3.00%                        
Common stock, par value (in dollars per share) | $ / shares                   $ 0   $ 0 $ 0        
Cyclerion                                  
Nature of Business                                  
Up front payment received             $ 1,750,000           $ 1,250,000        
Remaining additional up front payment                         $ 500,000        
Akebia                                  
Nature of Business                                  
Additional milestone cash payment                   $ 557,500,000   $ 557,500,000          
Up front payment received                             $ 3,000,000    
Development milestone payment       $ 1,000,000                   $ 1,000,000      
Sales Agreement [Member]                                  
Nature of Business                                  
Proceeds from stock purchase agreement                   $ 800,000   $ 2,100,000          
Sale of shares | shares                   405,000   715,220          
Maximum                                  
Nature of Business                                  
Maximum amount of aggregate initial offering price         $ 20,000,000                        
Maximum | Sales Agreement [Member]                                  
Nature of Business                                  
Commissions paid                       $ 100,000          
Subsequent Event [Member]                                  
Nature of Business                                  
Up front payment received     $ 3,700,000                            
Proceeds from stock purchase agreement   $ 800,000                              
Series A Preferred Stock                                  
Nature of Business                                  
Preferred stock, shares issued | shares                                 351,037
Preferred stock, par value (in dollars per share) | $ / shares                                 $ 8.68
Common Stock                                  
Nature of Business                                  
Common stock shares issued | shares                                 225,000
Sale of shares | shares                   405,000   715,220          
2025 Equity Private Placement                                  
Nature of Business                                  
Transaction costs associated with sale of transferred assets                     $ 100,000            
2025 Equity Private Placement | Common Stock                                  
Nature of Business                                  
Common stock shares issued | shares           499,998                      
Common stock share purchase price | $ / shares           $ 2.75                      
Proceeds from stock purchase agreement           $ 1,375,000                      
Korsana                                  
Nature of Business                                  
Net cash on capitalization                   $ 0              
Korsana | Subsequent Event [Member]                                  
Nature of Business                                  
Number of common shares 1.1009                                
Aggregate purchase price $ 380,000,000                                
Korsana | Series A Preferred Stock | Subsequent Event [Member]                                  
Nature of Business                                  
Preferred stock, par value (in dollars per share) | $ / shares $ 0.0001                                
Korsana | Series Seed Preferred Stock | Subsequent Event [Member]                                  
Nature of Business                                  
Preferred stock, par value (in dollars per share) | $ / shares 0.0001                                
Korsana | Common Stock | Subsequent Event [Member]                                  
Nature of Business                                  
Common stock, par value (in dollars per share) | $ / shares $ 0.0001                                
Cyclerion | Common Stock | Subsequent Event [Member]                                  
Nature of Business                                  
Percentage of outstanding shares 9.99%                                
Tisento Therapeutics Holdings Inc                                  
Nature of Business                                  
Outstanding equity securities               10.00%