Quarterly report pursuant to Section 13 or 15(d)

Revision of Prior Period Financial Statements - Summary of Restatement of Statement of Equity (Detail)

v3.21.2
Revision of Prior Period Financial Statements - Summary of Restatement of Statement of Equity (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Restatement [Line Items]            
Shareholders' equity total $ 15,916 $ 29,511 $ 47,329 $ 95,842 $ 118,175 $ 352,473
Previously Reported [Member]            
Restatement [Line Items]            
Deficit accumulated (720,629)          
Shareholders' equity total 50,842   50,842      
Adjustment [Member]            
Restatement [Line Items]            
Deficit accumulated (3,513)          
Shareholders' equity total (3,513)   (3,513)      
Restated [Member]            
Restatement [Line Items]            
Deficit accumulated (724,142)          
Shareholders' equity total $ 47,329   $ 47,329