Earnings Per Share - Computation of Basic and Diluted Net Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income	$ 91,930	$ 64,616
Denominator:
Basic weighted average shares outstanding	58,014	57,740
Dilutive effect of unvested restricted stock	205	654
Diluted weighted average shares outstanding	58,219	58,394
Earnings per share:
Earnings per share, basic	$ 1.58	$ 1.12
Earnings per share, diluted	$ 1.58	$ 1.11

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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