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Net Income per Share
 9 Months Ended
Sep. 30, 2022
Earnings Per Share Reconciliation [Abstract]  
Net Income per Share Net Income per ShareBasic net income per share is computed using the weighted average number of common shares outstanding during the applicable period. Diluted net income per share is computed using the weighted average number of common shares outstanding during the period, plus the dilutive effect of potential common stock. Potential common stock consists of shares issuable pursuant to stock options, restricted stock units (“RSUs”), deferred stock units (“DSUs”), convertible senior notes and warrants issued by the Company. For the three and nine months ended September 30, 2022, the dilutive effect of outstanding awards is reflected in diluted earnings per share by application of the treasury stock method and the dilutive effect of the convertible securities is reflected in diluted earnings per share by application of the if-converted method. For the three and nine months ended September 30, 2021, the dilutive effect of outstanding awards and convertible securities is reflected in diluted earnings per share by application of the treasury stock method.
The following table sets forth the components used in the computation of basic and diluted net income per share for the three and nine months ended September 30, 2022 and 2021 (in thousands, except per share data):
 
 For the Three Months
Ended September 30,		For the Nine Months
Ended September 30,
 2022202120222021
Numerator:
Net income$108,154 $178,916 $346,854 $491,108 
Denominator:
Shares used for basic net income per share158,715 162,767 159,749 162,967 
Effect of dilutive securities:
Stock options1 3 17 19 
RSUs and DSUs352 1,520 746 1,515 
Convertible senior notes— 2,028 960 1,589 
Warrants related to issuance of convertible senior notes— — — — 
Shares used for diluted net income per share159,068 166,318 161,472 166,090 
Basic net income per share$0.68 $1.10 $2.17 $3.01 
Diluted net income per share$0.68 $1.08 $2.15 $2.96 

For the three and nine months ended September 30, 2022 and 2021, certain potential outstanding common shares issuable in respect of stock options, service-based RSUs, convertible notes and warrants were excluded from the computation of diluted net income per share because the effect of including these items was anti-dilutive. Additionally, certain performance-based RSUs were excluded from the computation of diluted net income per share because the underlying performance conditions for such RSUs had not been met as of these dates. The number of potentially outstanding common shares excluded from the computation of diluted net income per share for the three and nine months ended September 30, 2022 and 2021 are as follows (in thousands):

For the Three Months
Ended September 30,		For the Nine Months
Ended September 30,
2022202120222021
Service-based RSUs2,478 149 2,313 811 
Market- and performance-based RSUs1,022 1,189 1,032 1,248 
Convertible senior notes— 9,898 — 9,898 
Warrants related to issuance of convertible senior notes21,991 21,991 21,991 21,991 
Total shares excluded from computation25,491 33,227 25,336 33,948