Earnings Per Share - Basic and Diluted Weighted Average Shares Outstanding Used to Compute Earnings Per Share (Detail) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	37,485	37,529	37,482	37,456
Dilutive effect of stock options and restricted stock	103	79	135	260
Diluted weighted average shares outstanding	37,588	37,608	37,617	37,716
Basic earnings per share	$ 1.6	$ 1.78	$ 3.56	$ 3.52
Diluted earnings per share	$ 1.59	$ 1.78	$ 3.55	$ 3.49