v3.25.4
Notes Receivable - Additional Information (Detail)
$ in Millions
1 Months Ended 12 Months Ended
Nov. 30, 2023
USD ($)
Aug. 30, 2023
USD ($)
Sep. 30, 2021
USD ($)
Aug. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Nov. 30, 2025
USD ($)
May 31, 2024
USD ($)
May 31, 2024
CAD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2023
USD ($)
Aug. 31, 2023
Mar. 31, 2021
USD ($)
Notes Receivable [Line Items]                            
Change in fair value of assets and liabilities, net         $ (3,100,000) $ (3,800,000)                
Prepaid Expense and Other Assets, Current         19,644,000 7,795,000                
Secured debt         2,500,000 2,200,000                
IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Change in fair value of assets and liabilities, net           (10,900,000)                
Prepaid Expense and Other Assets, Current         $ 971,000                  
IntelGenx Corp [Member] | DIP Loan [Member]                            
Notes Receivable [Line Items]                            
Change in fair value of assets and liabilities, net           $ (2,800,000)                
Convertible Debenture [Member] | Subscription Agreement [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Secured debt   $ 2,200,000                        
Convertible Debenture [Member] | Unit [Member] | Subscription Agreement [Member] | IntelGenx [Member]                            
Notes Receivable [Line Items]                            
Conversion of units, debentures, Value $ 750,000                          
Debtor In Possession Loan [Member] | IntelGenx [Member]                            
Notes Receivable [Line Items]                            
Long-Term Debt, Fair Value               $ 5,700,000 $ 7.8          
Debtor In Possession Loan [Member] | Maximum [Member]                            
Notes Receivable [Line Items]                            
Line Of Credit                 $ 8.0          
March Term Loan Receivable [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Receivable, Face amount                           $ 2,000,000
Aggregate principal amount                           2,000,000
Loans receivable, Fixed interest rate         8.00%                  
2023 Term Loan Note [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Receivable, Face amount                     $ 500,000      
Aggregate principal amount                     $ 500,000      
Additional Term Loan Receivable [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Receivable, Face amount                   $ 2,000,000       500,000
Aggregate principal amount                   2,000,000       $ 500,000
Additional Term Loan Receivable [Member] | Amended and Restated Loan Agreement [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Receivable, Face amount     $ 3,000,000                      
Aggregate principal amount     3,000,000                      
Additional Term Loan Receivable [Member] | Amended and Restated Loan Agreement [Member] | IntelGenx Corp [Member] | First Tranche [Member]                            
Notes Receivable [Line Items]                            
Receivable, Face amount     3,000,000             1,000,000        
Aggregate principal amount     3,000,000             $ 1,000,000        
Additional Term Loan Receivable [Member] | Amended and Restated Loan Agreement [Member] | IntelGenx Corp [Member] | Second Tranche [Member]                            
Notes Receivable [Line Items]                            
Receivable, Face amount     3,000,000                      
Aggregate principal amount     3,000,000                      
Term Loan Receivable [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Receivable, Face amount     8,500,000                      
Aggregate principal amount     8,500,000                      
Conversion Price                       $ 0.185    
Term Loan Receivable [Member] | Amended and Restated Loan Agreement [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Receivable, Face amount     6,000,000                      
Aggregate principal amount     6,000,000                      
Loan agreement     $ 6,000,000                      
Term Loan Receivable [Member] | Minimum [Member] | Amended and Restated Loan Agreement [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Term loan maturity date                         Jan. 05, 2024  
Term Loan Receivable [Member] | Maximum [Member] | Amended and Restated Loan Agreement [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Term loan maturity date                         Jan. 05, 2025  
Loans Receivable [Member]                            
Notes Receivable [Line Items]                            
Receivables, Maturity description         In September 2021, the Company entered into an amended and restated loan agreement which, among other things, increased the principal amount of loans available to IntelGenx by $6.0 million, for a total of up to $8.5 million. The additional $6.0 million loan amount was funded via two separate $3.0 million tranches. The first $3.0 million tranche was funded in January 2022                  
Beckley Psytech Promissory Note [Member]                            
Notes Receivable [Line Items]                            
Debt instrument, interest rate       12.00%                    
Notes Receivable, Fair Value Disclosure       $ 10,000,000                    
Beckley Psytech Promissory Note [Member] | IntelGenx Corp [Member]                            
Notes Receivable [Line Items]                            
Long-Term Debt, Fair Value       $ 10,300,000                    
Interest income         $ 300,000                  
Amandala Neuro Limited Notes Receivable [Member]                            
Notes Receivable [Line Items]                            
Prepaid Expense and Other Assets, Current             $ 900,000              
loans receivable             1,500,000              
costs net of expected credit losses             $ 600,000