Earnings Per Share - Computation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 27,749	$ 35,833
Average number of common shares outstanding (in shares)	33,245	33,296
Effect of dilutive stock options and restricted stock (in shares)	125	142
Average number of common shares outstanding used to calculate diluted earnings per share (in shares)	33,370	33,438
Options excluded from diluted earnings per share because of their antidilutive effect (in shares)	0	0