Computation of Earnings Per Share - Summary of Calculation of Basic Earnings Per Common Share and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net Income (Loss)	$ 354,857	$ 357,422	$ 253,235
Denominator:
Denominator for basic earnings per share–weighted average common shares	26,632	26,520	26,322
Dilutive effect of share-based awards	131	154	385
Denominator for diluted earnings per share–adjusted weighted average common shares	26,763	26,674	26,707
Basic Earnings Per Share	$ 13.32	$ 13.48	$ 9.62
Diluted Earnings Per Share	$ 13.26	$ 13.40	$ 9.48