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, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	37,655	37,485	37,698	37,482
Dilutive effect of stock options and full value awards	34	103	42	135
Diluted weighted average shares outstanding	37,689	37,588	37,740	37,617
Basic earnings per share	$ 1.72	$ 1.6	$ 3.65	$ 3.56
Diluted earnings per share	$ 1.72	$ 1.59	$ 3.64	$ 3.55