Quarterly report pursuant to Section 13 or 15(d)

Development Financing Agreement - Additional Information (Detail)

v3.21.2
Development Financing Agreement - Additional Information (Detail) - USD ($)
$ in Millions
Nov. 30, 2021
Sep. 30, 2021
Aug. 31, 2021
Jul. 30, 2021
Feb. 28, 2021
Debt Instrument [Line Items]          
Line Of Credit Optional Amount Of Borrowing Capacity       $ 25.0  
Description Of Percentage Fixed Success Payments     2.0    
Repayments of Lines of Credit     $ 10.0    
Percentage Optional Funding     133.00%    
Description Of Percentage Variable Success Payments     1.1    
Description Of Aggregate Return From The Funds Provided     3.1    
Aggregate Return Percentage From The Funds Provided     $ 232.5    
Percentage of Accelerate Payment Payable On Funds provided     1.35    
Description Repayments On Funds Provided Upon Termination Of Financing Agreement     2.0    
Aggregate Return From The Optional Funds Provided     $ 310.0    
Development financing liability   $ 23.3      
Development Financing Arrangement Fund Received   25.0      
Liability for Future Policy Benefit, Adverse Development, Expense   0.5      
Unamortized Transaction Costs Related Development Financing Liability   $ 2.2      
Percentage of Unamortized Portion of The Development Financing Liability   21.00%      
Fixed Success Payments [Member]          
Debt Instrument [Line Items]          
Anniversary Payments Due Year One     15.0    
Anniversary Payments Due Year Two     22.5    
Anniversary Payments Due Year Three     22.5    
Anniversary Payments Due Year Four     25.0    
Anniversary Payments Due Year Five     27.5    
Anniversary Payments Due Year Six     27.5    
Variable Success Payments [Member]          
Debt Instrument [Line Items]          
Payments Upon Reaching Cumulative US Product Sales Thresholds Year One     17.5    
Payments Upon Reaching Cumulative US Product Sales Thresholds Year Two     27.5    
Payments upon reaching product sales run rate     37.5    
Installment Funding Number Three [Member]          
Debt Instrument [Line Items]          
Proceeds from Lines of Credit         $ 25.0
ABW Cyclops SPV LP [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity       100.0  
Proceeds from Lines of Credit       75.0  
Line Of Credit Optional Amount Of Borrowing Capacity       $ 25.0  
ABW Cyclops SPV LP [Member] | Installment Funding Number One [Member]          
Debt Instrument [Line Items]          
Proceeds from Lines of Credit     $ 25.0    
ABW Cyclops SPV LP [Member] | Installment Funding Number Two [Member] | Subsequent Event [Member]          
Debt Instrument [Line Items]          
Proceeds from Lines of Credit $ 25.0        
Financing Agreement Termination Event Condition One [Member] | ABW Cyclops SPV LP [Member]          
Debt Instrument [Line Items]          
Percentage of amount to be paid by entity upon the termination of the agreement   310.00%      
Financing Agreement Termination Event Condition Two [Member] | ABW Cyclops SPV LP [Member]          
Debt Instrument [Line Items]          
Percentage of amount to be paid by entity upon the termination of the agreement   200.00%      
Financing Agreement Termination Event Condition Three [Member] | ABW Cyclops SPV LP [Member]          
Debt Instrument [Line Items]          
Percentage of amount to be paid by entity upon the termination of the agreement   100.00%