EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2022

Basic earnings per share is computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. For purposes of computing basic earnings per share, any nonvested shares of restricted stock that have been issued by the Company and are contingently returnable to the Company are excluded from the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share is computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options, unvested restricted stock, unvested equity-settled RSUs and the stock to be issued under the Company’s ESPP. The dilutive effect of potentially dilutive securities is reflected in diluted earnings per share by application of the treasury stock method.

The following table sets forth the computation of basic and diluted earnings per share of common stock as follows:


	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Numerator for basic and diluted earnings per share:
Net income	$	18,604	$	114,671	$	108,323	$	223,717
Numerator for basic and diluted earnings per share	$	18,604	$	114,671	$	108,323	$	223,717

Denominator:
Weighted average common shares for basic earnings per share	57,240		56,463		57,078		56,317
Net effect of dilutive stock options, restricted stock units, restricted stock awards and stock issuable under the ESPP	1,780		2,548		1,903		2,579
Weighted average common shares for diluted earnings per share	59,020		59,011		58,981		58,896

Net income per share:
Basic	$	0.33	$	2.03	$	1.90	$	3.97
Diluted	$	0.32	$	1.94	$	1.84	$	3.80

The number of shares underlying equity-based awards that were excluded from the calculation of diluted earnings per share as their effect would be anti-dilutive was 461 thousand and 299 thousand during the three and six months ended June 30, 2022, respectively.

The number of shares underlying equity-based awards that were excluded from the calculation of diluted earnings per share as their effect would be anti-dilutive was 83 and 49 thousand during the three and six months ended June 30, 2021.