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Net Income Available to Common Stockholders Per Share of the Company
12 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
Net Income Available to Common Stockholders Per Share of the Company Net Income Available to Common Stockholders Per Share of the Company
The following table reconciles the numerator and denominator in computing the Company’s basic and diluted per-share computations for net income available to common stockholders for the years ended December 31, 2020, 2019 and 2018:

Year Ended December 31,
202020192018
(in thousands, except unit and per unit amounts)
Numerator:
Net income attributable to common stockholders$187,105 $195,443 $258,415 
Allocation to participating securities (1)
(2,229)(2,119)(2,004)
Numerator for basic and diluted net income available to common stockholders$184,876 $193,324 $256,411 
Denominator: 
Basic weighted average vested shares outstanding113,241,341 103,200,568 99,972,359 
Effect of dilutive securities 478,281 648,600 510,006 
Diluted weighted average vested shares and common stock equivalents outstanding113,719,622 103,849,168 100,482,365 
Basic earnings per share: 
Net income available to common stockholders per share$1.63 $1.87 $2.56 
Diluted earnings per share: 
Net income available to common stockholders per share$1.63 $1.86 $2.55 
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(1)Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

Share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities. The impact of potentially dilutive common shares, including stock options, RSUs, shares issuable under executed forward equity sale agreements, if any, and other securities are considered in our diluted earnings per share calculation for the years ended December 31, 2020, 2019, and 2018. Certain market measure-based RSUs are not included in dilutive securities as of December 31, 2020, 2019, and 2018 as not all performance metrics had been met by the end of the applicable reporting periods.
See Note 15 “Share-Based and Other Compensation” for additional information regarding the stock options and other share-based compensation.