Earnings Per Share - Computation of Basic and Diluted Net Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net income	$ 281,389	$ 195,960	$ 143,453
Denominator:
Basic weighted average shares outstanding	57,928	57,885	57,620
Dilutive effect of unvested restricted stock	247	306	665
Diluted weighted average shares outstanding	58,175	58,191	58,285
Earnings Per Share Reconciliation [Abstract]
Earnings per share, basic	$ 4.86	$ 3.39	$ 2.49
Earnings per share, diluted	$ 4.84	$ 3.37	$ 2.46