Net Income (Loss) Per Common Share - Additional Information (Detail) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share, minimum price range (in dollars per share)	$ 7.93	$ 7.93	$ 7.93	$ 7.93
Anti dilutive securities excluded from computation of earnings per share, maximum price range (in dollars per share)	$ 25.16	$ 25.16	$ 25.16	$ 25.16