Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share Basic [Abstract]
Net income	$ 11,361	$ 19,136	$ 34,824	$ 62,215
Basic weighted average common shares	19,198,320	19,344,636	19,267,602	19,328,041
Basic earnings per common share	$ 0.59	$ 0.99	$ 1.81	$ 3.22
Net income	$ 11,361	$ 19,136	$ 34,824	$ 62,215
Weighted average common shares	19,198,320	19,344,636	19,267,602	19,328,041
Restricted stock and RSUs	71,026	63,282	73,296	64,898
Diluted weighted average common shares	19,269,346	19,407,918	19,340,898	19,392,939
Diluted earnings per common share	$ 0.59	$ 0.99	$ 1.80	$ 3.21