Earnings Per Share of Common Stock (Tables)

12 Months Ended

Dec. 31, 2023

Earnings Per Share of Common Stock

Summary of basic and diluted earnings per share calculations

	Year ended December 31,
	2023		2022		2021
	(in thousands, except per share amounts)
Net income	$	144,656	$	475,507	$	1,003,490
Weighted average shares of common stock outstanding		49,978		53,065		63,799
Effect of dilutive securities - shares issuable under stock-based compensation plan		2,755		2,885		3,672
Weighted average diluted shares of common stock outstanding		52,733		55,950		67,471
Basic earnings per share	$	2.89	$	8.96	$	15.73
Diluted earnings per share	$	2.74	$	8.50	$	14.87

Schedule of anti-dilutive shares outstanding

	Year ended December 31,
	2023		2022		2021
	(in thousands except for weighted average exercise price)
Performance-based RSUs (1)		561		281		223
Time-based RSUs		2		62		1
Stock options (2)		289		1,339		211
Total anti-dilutive units and options		852		1,682		435
Weighted average exercise price of anti-dilutive stock options (2)	$	59.42	$	58.58	$	58.85

(1) Certain performance-based RSUs were outstanding but not included in the computation of earnings per share because the performance thresholds included in such RSUs have not been achieved.

(2) Certain stock options were outstanding but not included in the computation of diluted earnings per share because the weighted-average exercise prices were above the average stock price for the year.