Earnings Per Share - Basic and Diluted Weighted Average Shares Outstanding Used to Compute Earnings Per Share (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	37,468,000	37,508,000	37,359,000
Dilutive effect of stock options and restricted stock	175,000	589,000	785,000
Diluted weighted average shares outstanding	37,643,000	38,097,000	38,144,000
Basic earnings per share	$ 6.68	$ 6.88	$ 8.01
Diluted earnings per share	$ 6.65	$ 6.77	$ 7.85