Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.20.2
Commitments and Contingencies - Additional Information (Detail) - USD ($)
3 Months Ended
Sep. 17, 2020
Jun. 29, 2020
May 22, 2020
Apr. 29, 2020
Aug. 31, 2020
May 31, 2020
Commitments and Contingencies [Line Items]            
Common stock, shares issued   4,000,000     570,325,000 519,261,000
Common stock converted value   $ 22,500,000        
Payment of supply commitment         $ 37,000,000  
Project Work Order | Termination of Any One Clinical Trial            
Commitments and Contingencies [Line Items]            
Financial penalties         2,100,000  
Project Work Order | Termination of Any One Clinical Trial | Minimum            
Commitments and Contingencies [Line Items]            
Financial penalties         700,000  
Project Work Order | Termination of All Clinical Trials | Minimum            
Commitments and Contingencies [Line Items]            
Financial penalties         1,900,000  
Project Work Order | Termination of All Clinical Trials | Maximum            
Commitments and Contingencies [Line Items]            
Financial penalties         3,700,000  
Samsung Agreement [Member]            
Commitments and Contingencies [Line Items]            
Supply Commitment Delivered     $ 2,600,000      
Samsung Agreement [Member] | Manufacturing and Supply Service [Member]            
Commitments and Contingencies [Line Items]            
Supply Commitment Delivered         45,000,000  
Payments due during calendar year         34,000,000  
Remaining Supply commitment Cost         112,000,000  
Obligation Due in Next Twelve Months         65,000,000  
Obligation Due remainder of fiscal year         24,000,000  
Obligation Due in Next Two years         $ 23,000,000  
Torreya Capital LLC [Member] | Arbitration Claim            
Commitments and Contingencies [Line Items]            
Damages Sought Value $ 1,740,000     $ 600,000