17.

Earnings Per Shar

The following table sets forth the reconciliation of earnings and the weighted average number of shares used in the calculation of basic and diluted earnings per share (amounts presented in thousands except per share data):

	Three Months Ended						Six Months Ended
	June 30 ,						June 30 ,
	2018			2017			2018			2017
Computation of Basic and Diluted Earnings Per Share:
Net income available to the Company's common shareholders	$	150,852		$	131,861		$	280,353		$	197,039
Earnings attributable to participating securities		(863	)		(647	)		(1,472	)		(1,070	)
Net income available to the Company’s common shareholders for basic earnings per share		149,989			131,214			278,881			195,969
Distributions on convertible units		282			259			521			29
Net income available to the Company’s common shareholders for diluted earnings per share	$	150,271		$	131,473		$	279,402		$	195,998

Weighted average common shares outstanding – basic		420,731			423,650			422,060			423,516
Effect of dilutive securities (1):
Equity awards		350			432			352			505
Assumed conversion of convertible units		847			862			824			63
Weighted average common shares outstanding – diluted		421,928			424,944			423,236			424,084

Net income available to the Company's common shareholders:
Basic earnings per share	$	0.36		$	0.31		$	0.66		$	0.46
Diluted earnings per share	$	0.36		$	0.31		$	0.66		$	0.46

(

)

The effect of the assumed conversion of certain convertible units had an anti-dilutive effect upon the calculation of Income from continuing operations per share. Accordingly, the impact of such conversions has

not

been included in the determination of diluted earnings per share calculations. Additionally, there were

3.2

million and

4.0

million stock options that were

not

dilutive as of

June 30, 2018

and

2017,

respectively, and

2.3

million shares of restricted stock that were

not

dilutive for the

three

months ended

June 30, 2018.

The Company's unvested restricted share awards contain non-forfeitable rights to distributions or distribution equivalents. The impact of the unvested restricted share awards on earnings per share has been calculated using the

two

-class method whereby earnings are allocated to the unvested restricted share awards based on dividends declared and the unvested restricted shares' participation rights in undistributed earnings.