Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details)

v3.23.3
Fair Value Measurements - Narrative (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 31, 2022
USD ($)
Sep. 30, 2023
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Change in fair value was recognized   $ 100
AVTX-501    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Maximum aggregate milestone payment $ 20,000  
AVTX-611    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Maximum aggregate milestone payment 20,000  
Milestone One | AVTX-007    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Maximum aggregate milestone payment 6,250  
Milestone Two | AVTX-007    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Maximum aggregate milestone payment 67,500  
Derivative liability | AVTX-501 And AVTX-007    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Initial valuation of derivative liability 4,800 5,000
Derivative liability | AVTX-501    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Initial valuation of derivative liability 3,500 $ 3,700
Derivative liability | AVTX-501 | Measurement Input, Probability Of Success    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability, measurement input   0.23
Derivative liability | AVTX-501 | Measurement Input, Expected Term    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability, measurement input, term   4 years 1 month 6 days
Derivative liability | AVTX-007    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Initial valuation of derivative liability 1,300 $ 1,300
Derivative liability | AVTX-007 | Measurement Input, Probability Of Success    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability, measurement input   0.17
Derivative liability | AVTX-007 | Measurement Input, Expected Term    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability, measurement input, term   5 years 1 month 6 days
Derivative liability | AVTX-007 | Measurement Input, Sales Forecast Peak    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability, measurement input   300,000
ES | Derivative liability    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Initial valuation of derivative liability $ 5,000