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Long-Term Obligations - Additional Information (Detail)
1 Months Ended 12 Months Ended
Oct. 15, 2022
Days
Jan. 01, 2021
USD ($)
Oct. 16, 2018
USD ($)
Sep. 30, 2019
USD ($)
Dec. 31, 2022
USD ($)
Days
$ / shares
shares
Dec. 31, 2021
USD ($)
Oct. 26, 2018
USD ($)
Subsequent Event [Line Items]              
Accumulated deficit         $ (1,343,939,000) $ (1,178,648,000)  
Debt instrument convertible threshold consecutive trading days | Days         5    
Description of debt instrument convertible period         during the five-business day period immediately after any five consecutive trading day period    
Principal amount of notes used in conversion rate         $ 1,000    
Debt instrument convertible threshold maximum percentage of product of last reported sale price of common stock         98.00%    
Fair Value of embeded derivative liability         $ 2,800,000 3,080,000  
Deferred Royalty Obligation [Member] | Level 3 [Member]              
Subsequent Event [Line Items]              
Deferred royalty obligation at fair value         129,900,000 129,900,000  
Revenue Interest Financing Agreement [Member]              
Subsequent Event [Line Items]              
Debt issuance costs         $ 1,400,000    
First investment amount       $ 75,000,000.0      
Revenue Interest Financing Agreement [Member] | HealthCare Royalty Partners IV LP [Member] | Royalty Due On December 31, 2024 [Member]              
Subsequent Event [Line Items]              
Royalty Payable Percentage on First Investment Amount         100.00%    
Amended Revenue Interest Agreement [Member]              
Subsequent Event [Line Items]              
Second investment amount         $ 60,000,000.0    
Amended Revenue Interest Agreement [Member] | HealthCare Royalty Partners IV LP [Member] | Royalty Due On December 31, 2024 [Member]              
Subsequent Event [Line Items]              
Royalty Payable Percentage on Second Investment Amount         65.00%    
Amended Revenue Interest Agreement [Member] | HealthCare Royalty Partners IV LP [Member] | Royalty Due On September 30, 2026 [Member]              
Subsequent Event [Line Items]              
Royalty Payable Percentage on First Investment Amount         100.00%    
Royalty Payable Percentage on Second Investment Amount         100.00%    
Revenue Interest Agreement And Amended Revenue Interest Agreement [Member]              
Subsequent Event [Line Items]              
First investment amount         $ 135,000,000.0 135,000,000.0  
Debt Instrument Interest Rate         15.00%    
Revenue Interest Agreement And Amended Revenue Interest Agreement [Member] | HealthCare Royalty Partners IV LP [Member]              
Subsequent Event [Line Items]              
Aggregate Royalties Percentage         185.00%    
Cumulative payments         $ 45,600,000    
Convertible Note Offering [Member]              
Subsequent Event [Line Items]              
Notes converted in to common stock, amount | shares         63.0731    
Notes converted in to common stock, shares         $ 1    
Notes, conversion price per share | $ / shares         $ 15.85    
3% Convertible Senior Notes Due 2025 [Member]              
Subsequent Event [Line Items]              
Principal     $ 150,000,000.0   $ 172,500,000 172,500,000 $ 22,500,000
Debt issuance costs         5,600,000    
Debt issuance costs allocated to equity component and recorded as a reduction to additional paid-in capital         2,200,000    
Debt issuance costs allocated to liability component and recorded as a reduction of convertible notes         $ 3,400,000    
Debt discount and issuance costs amortized to interest expense, amortization period         7 years    
Notes, interest rate     3.00%   3.00%    
Notes, maturity date         Oct. 15, 2025    
Principal amount of notes used in conversion rate         $ 1    
Debt instrument, convertible latest date         Jun. 15, 2025    
Notes conversion price, percentage 130.00%       130.00%    
Notes instrument, trading days | Days 20       20    
Debt instrument convertible threshold consecutive trading days | Days 30       30    
Notes, repurchase price 100.00%            
Estimated fair value of convertible notes         $ 133,100,000 $ 139,200,000  
Expected life of convertible notes         7 years    
Debt Instrument Interest Rate         3.53%    
3% Convertible Senior Notes Due 2025 [Member] | ASU 2020-06 [Member]              
Subsequent Event [Line Items]              
Decrease to additional paid-in capital   $ (65,600,000)          
Accumulated deficit   (15,000,000.0)          
Decrease in deferred tax liability   (11,800,000)          
3% Convertible Senior Notes Due 2025 [Member] | Convertible Note Offering [Member] | ASU 2020-06 [Member]              
Subsequent Event [Line Items]              
Increase in carrying value of debt   $ 50,600,000