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Earnings Per Share - Additional Information (Detail) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Earnings Per Share [Abstract]        
Antidilutive securities excluded from computation of earnings (loss) per share, amount 7,653,516 881,107 7,645,986 881,107