Computation of Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Schedule of basic and diluted (loss) earnings per share calculations

The table below sets forth the calculation of basic and diluted income per share for the periods indicated (in thousands, except per share data).

	Three Months Ended
	March 31,
	2021		2020
Numerator:
Net income used for calculating basic and diluted income per share	$	164,100	$	75,097
Denominator:
Weighted average common shares used in the calculation of basic income per share	88,352		89,219
Dilutive effect of outstanding awards associated with stock-based compensation plans (1)	787		847
Shares used in the calculation of diluted income per share	89,139		90,066
Basic income per share	$	1.86	$	0.84
Diluted income per share	$	1.84	$	0.83

(1)Certain potential shares of common stock were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These potential shares of common stock totaled approximately 0.4 million and 0.7 million for the three months ended March 31, 2021, and 2020, respectively.