Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.20.4
Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Commitments and Contingencies Disclosure [Line Items]    
Employer matching contribution payments $ 1,562 $ 6,052
Liability recorded for employer contribution payments $ 2,123  
Messrs. Mitchell, Gamble, Fernandes and Cavalier    
Commitments and Contingencies Disclosure [Line Items]    
Employment agreements term extension 1 year  
Mr. Zoradi    
Commitments and Contingencies Disclosure [Line Items]    
Employment Agreement Expiration Date Dec. 31, 2021