Earnings Per Share - Basic and Diluted Weighted Average Shares Outstanding Used to Compute Earnings Per Share (Detail) - $ / shares shares in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share, Basic and Diluted [Abstract]
Basic weighted average shares outstanding	37,384	37,470
Dilutive effect of stock options and restricted stock	440	685
Diluted weighted average shares outstanding	37,824	38,155
Basic earnings per share	$ 1.73	$ 2.15
Diluted earnings per share	$ 1.71	$ 2.11