v3.25.4
Fair Value Measurement - Additional Information (Detail)
 1 Months Ended 12 Months Ended
Jul. 01, 2025
USD ($)
Jun. 02, 2025
USD ($)
Nov. 30, 2025
USD ($)
Oct. 31, 2023
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2025
€ / shares
Jul. 01, 2025
€ / shares
shares
Jul. 01, 2025
$ / shares
shares
Jun. 02, 2025
€ / shares
shares
Jun. 02, 2025
$ / shares
shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Change In Fair Value Of Assets And Liabilities, Net         $ (24,416,000) $ (48,879,000)          
Change in fair value of assets and liabilities, net         3,100,000 3,800,000          
Change In the Fair Value Of Digital Assets         (1,233,000) 0          
Business combination, earn-out consideration     $ 100,000                
Share price | € / shares             € 0.1        
Gain (loss) from change in fair value of the derivative liability         $ 5,200,000 $ 1,400,000          
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]         Change In Fair Value Of Assets And Liabilities, Net            
Volatility         89.50% 75.00%          
Measurement Input, Discount Rate [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Business Combination, Contingent Consideration, Liability, Measurement Input         0.13 0.116          
Measurement Input, Probability of the Milestone [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Business Combination, Contingent Consideration, Liability, Measurement Input         0.05 0.05          
Contingent Consideration Liability - Related Parties [Member] | Measurement Input, Discount Rate for Royalties [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Business Combination, Contingent Consideration, Liability, Measurement Input           0.05          
ATAI LIFE SCIENCES N.V. [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Gain (loss) from change in fair value of the derivative liability         $ 20,300,000 $ 3,400,000          
DIP Loan [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Financing Receivable, after Allowance for Credit Loss, Current, Total         5,700,000            
Subscription Agreement [Member] | Pre-funded Warrants [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Conversion of unit, conversion price | $ / shares                 $ 0.01   $ 0.01
Sale Leaseback Transaction, Gross Proceeds, Financing Activities $ 50,000,000 $ 29,900,000                  
Change in fair value of assets and liabilities, net         22,900,000            
Common Stock Shares Issued to Related Party | shares               4,566,210 4,566,210 6,311,006 6,311,006
Share price | $ / shares                 $ 2.19   $ 1.84
DemeRx [Member] | Stock Purchase and Framework Agreement [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Business combination, earn-out consideration       $ 8,000,000              
Fair value of the contingent milestone and royalty liabilities         200,000 200,000          
COMPASS Pathways Plc [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Change in fair value of assets and liabilities, net         18,300,000 39,400,000          
IntelGenx Term Loan [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Unsecured Debt, Total         $ 0            
IntelGenx [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Change In Fair Value Of Assets And Liabilities, Net           10,900,000          
Change in fair value of assets and liabilities, net           2,900,000          
IntelGenx [Member] | DIP Loan [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Discount rate         12.50%            
Beckley Psytech Limited [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Derivative, Fair Value, Net, Total         $ 0 $ 2,800          
Beckley Psytech Limited [Member] | Additional Warrants [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Warrant Liability, Measurement Input Including Discount for Lack of Marketability           0.95          
Common Stock [Member] | Subscription Agreement [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Common Stock Shares Issued to Related Party | shares               18,264,840 18,264,840 9,993,341 9,993,341
Share price | (per share)               € 0.1   € 0.1 $ 1.84
Minimum [Member] | Contingent Consideration Liability - Related Parties [Member] | Measurement Input, Discount Rate for Royalties [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Business Combination, Contingent Consideration, Liability, Measurement Input           0.038          
Minimum [Member] | Subscription Agreement [Member] | Pre-funded Warrants [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Conversion of unit, conversion price | $ / shares                     $ 0.01
Minimum [Member] | Beckley Psytech Limited [Member] | Additional Warrants [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Probability of issuances under the deferred equity           55.00%          
Maximum [Member] | Contingent Consideration Liability - Related Parties [Member] | Measurement Input, Discount Rate for Royalties [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Business Combination, Contingent Consideration, Liability, Measurement Input           0.043          
Maximum [Member] | Beckley Psytech Limited [Member] | Additional Warrants [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Probability of issuances under the deferred equity           80.00%          
Royalty Liabilities [Member]                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Fair value of the contingent milestone and royalty liabilities         $ 100,000 $ 100,000