Quarterly report pursuant to Section 13 or 15(d)

Computations of Basic and Diluted Loss Per Share (Parenthetical) (Detail)

v3.21.2
Computations of Basic and Diluted Loss Per Share (Parenthetical) (Detail) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Earnings Per Share Disclosure [Line Items]        
Weighted average shares of participating restricted stock 2,344,000 1,175,000 2,112,000 880,000
Restricted Stock Units (RSUs)        
Earnings Per Share Disclosure [Line Items]        
Common equivalent shares for restricted stock units 103,000 438,000 90,000 689,000