v3.26.1
Nature of Operations - Additional Information (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Sep. 23, 2025
USD ($)
shares
Sep. 22, 2025
USD ($)
shares
Aug. 20, 2025
USD ($)
shares
Jul. 22, 2025
shares
Jun. 12, 2025
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
shares
May 22, 2026
$ / shares
Organization and Business Operation [Line Items]                          
Common stock, per value (in Dollars per share) | $ / shares           $ 0.0001       $ 0.0001   $ 0.0001  
Warrants outstanding           7,432,122       7,432,122      
Exercise price, per share (in Dollars per share) | $ / shares           $ 11.5       $ 11.5      
Warrants expiration date                   Sep. 30, 2027      
Warrants exercised on cashless basis                       1,327,878  
Issuance of common stock upon cashless exercise of warrants                       468,164  
Warrants exercisable for shares of common stock           7,432,122       7,432,122      
Cash and cash equivalents | $           $ 39,000       $ 39,000   $ 20,000  
Accumulated deficit | $           (284,723,000)       (284,723,000)   $ (275,800,000)  
Operating losses | $           4,224,000   $ 999,000   8,800,000 $ 1,664,000    
Net Income (Loss) | $           $ (4,347,000) $ (4,576,000) (999,000) $ (665,000) (8,923,000) (1,664,000)    
Cash flows from operations | $                   $ (4,808,000) $ (131,000)    
Shares of common stock (in Shares)           300,000       300,000      
Sponsor [Member]                          
Organization and Business Operation [Line Items]                          
Common stock held shares   2,072,500                      
Debt conversion original debt amount | $   $ 100,000                      
Consulting Services Agreement with JW Investment Management Company Limited [Member]                          
Organization and Business Operation [Line Items]                          
Percentage of cash financing service fee         7.00%         7.00%      
Scilex Holding Company [Member]                          
Organization and Business Operation [Line Items]                          
Common stock, per value (in Dollars per share) | $ / shares                         $ 0.0001
Common stock held shares   500,000                      
Scilex Holding Company [Member] | Legacy Semnur Stock Options [Member]                          
Organization and Business Operation [Line Items]                          
Conversion of shares converted                   40,000,000      
Scilex Holding Company [Member] | Stock Option [Member]                          
Organization and Business Operation [Line Items]                          
Conversion of shares issued                   50,000,000      
Scilex Holding Company [Member] | Debt Exchange Agreement [Member]                          
Organization and Business Operation [Line Items]                          
Debt conversion original debt amount | $   $ 54,200,000                      
Denali Capital Global Investments LLC [Member]                          
Organization and Business Operation [Line Items]                          
Business combination, prepaid expenses | $   12,000                      
Business combination, accouts payable | $   4,400,000                      
Business combination, related party liabilities | $   3,900,000                      
Business combination, notes payable | $   $ 4,600,000                      
Merger Agreement [Member]                          
Organization and Business Operation [Line Items]                          
Common stock exchange ratio                   1.25      
Business combination shares exchanged   229,740,978                      
Legacy Semnur Series A Preferred Stock [Member] | Scilex Holding Company [Member] | Debt Exchange Agreement [Member]                          
Organization and Business Operation [Line Items]                          
Debt conversion, converted instrument, shares issued   5,423,606                      
Class B Ordinary Shares [Member]                          
Organization and Business Operation [Line Items]                          
Sale of stock price per share (in Dollars per share) | $ / shares           $ 0.0001       $ 0.0001      
Per public share (in Dollars per share) | $ / shares           $ 0.0001       $ 0.0001      
Agreed to purchase (in Shares)                   500,000      
Aggregate consideration to purchase | $                   $ 2,000,000      
Series A Preferred Stock [Member] | Scilex Holding Company [Member] | Debt Exchange Agreement [Member]                          
Organization and Business Operation [Line Items]                          
Debt conversion, converted instrument, shares issued   5,423,606                      
Legacy Semnur Common Stock [Member]                          
Organization and Business Operation [Line Items]                          
Net Income (Loss) | $           $ 0 0 $ 0 $ 0        
Legacy Semnur Common Stock [Member] | Scilex Holding Company [Member]                          
Organization and Business Operation [Line Items]                          
Conversion of shares converted                   160,000,000      
Common Stock [Member]                          
Organization and Business Operation [Line Items]                          
Net Income (Loss) | $           $ 0 $ 0            
Common Stock [Member] | Sponsor [Member]                          
Organization and Business Operation [Line Items]                          
Conversion of shares converted   2,072,500                      
Debt conversion, converted instrument, shares issued   12,488                      
Common Stock [Member] | Securities Purchase Agreement (PIPE SPA)                          
Organization and Business Operation [Line Items]                          
Sponsor transferred (in Shares)     1,250,000                    
Sale of stock per transaction | $     $ 16,000                    
Total consideration | $     $ 20,000,000                    
Common Stock [Member] | Bitcoin Securities Purchase Agreement [Member]                          
Organization and Business Operation [Line Items]                          
Sponsor transferred (in Shares) 6,250,000                        
Sale of stock per transaction | $ $ 16,000                        
Total consideration | $ $ 100,000,000                        
Common Stock [Member] | Consulting Services Agreement with JW Investment Management Company Limited [Member]                          
Organization and Business Operation [Line Items]                          
Sponsor transferred (in Shares)       8,000,000 10,000,000         10,000,000      
Common Stock [Member] | Scilex Holding Company [Member]                          
Organization and Business Operation [Line Items]                          
Conversion of shares converted   500,000                      
Conversion of shares issued                   200,000,000      
Common Stock [Member] | Scilex Holding Company [Member] | Debt Exchange Agreement [Member]                          
Organization and Business Operation [Line Items]                          
Debt conversion, converted instrument, shares issued   542,361                      
Warrant [Member]                          
Organization and Business Operation [Line Items]                          
Exercise price, per share (in Dollars per share) | $ / shares           $ 0.01       $ 0.01      
Per public share (in Dollars per share) | $ / shares           $ 16.5       $ 16.5      
Redemption of unexpired warrants, description                   The Company may redeem any unexpired Warrants prior to their exercise at a price of $0.01 per Warrant, provided that the closing price of Common Stock equals or exceeds $16.50 per share (as adjusted for share subdivisions, share dividends, rights issuances, subdivisions, reorganizations, recapitalizations and the like) on each of 20 trading days within any 30-trading-day period commencing after the Warrants became exercisable and ending on the third trading day prior to the date on which notice of redemption is given. If and when the Warrants become redeemable, the Company may exercise its redemption right even if they are unable to register or qualify the underlying securities for sale under all applicable state securities laws. In addition, the Company may redeem the Warrants at any time after they become exercisable and prior to their expiration for a number of shares of Common Stock determined based on the fair market value of Common Stock.      
Consultants [Member] | Merger Agreement [Member]                          
Organization and Business Operation [Line Items]                          
Business combination shares exchanged   26,500,000                      
Underwriters [Member] | Merger Agreement [Member]                          
Organization and Business Operation [Line Items]                          
Business combination shares exchanged   100,000