Weighted Average Common Shares - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Shares granted, restricted stock (in shares)	695,832	1,117,009
Shares granted, stock options (in shares)	319,295	686,639
Shares granted, performance share units (in shares)	205,155	307,999