Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

Commitments and Contingencies - Additional Information (Detail) - USD ($)
Jan. 15, 2021
Dec. 31, 2020
Dec. 31, 2019
Loss Contingencies [Line Items]      
Indemnification liabilities   $ 0 $ 0
Accrued in the consolidated balance sheets related to indemnification obligations   $ 0  
Subsequent Event [Member]      
Loss Contingencies [Line Items]      
Loss Contingency, Lawsuit Filing Date January 15, 2021    
Loss Contingency, Name of Plaintiff Genfit S.A.    
Loss Contingency, Allegations alleging misappropriation of trade secrets and related causes of action based on the Company’s receipt of a Genfit protocol synopsis for Genfit’s Phase 3 clinical trial of its drug candidate elafibranor in patients with PBC    
Loss Contingency, Actions Taken by Defendant The Company intends to defend itself vigorously and does not believe that the ultimate outcome of this matter as a loss is probable nor that any amount is reasonably estimable