Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 15,929	$ 23,175
Less: earnings allocated to participating securities	164	216
Net income allocated to common shareholders	$ 15,765	$ 22,959
Weighted average number of common shares outstanding - basic (in shares)	63,961	50,576
Share-based plans (in shares)	277	204
Weighted average number of common shares outstanding - diluted (in shares)	64,238	50,780
Basic earnings per share (in usd per share)	$ 0.25	$ 0.45
Diluted earnings per share (in usd per share)	$ 0.25	$ 0.45