18.	Earnings Per Share

The following table provides a summary of net income (loss) and the number of common shares used in the computation of basic and diluted income (loss) per common share, which includes the weighted average number of common shares outstanding and the effect of dilutive potential common shares, if any.

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
(Amounts in thousands, except per share amounts)	2017			2016			2017			2016
Numerator:
Net income (loss) attributable to common stockholders	$	103,016		$	3,188		$	103,388		$	(3,306	)
Earnings allocated to unvested participating securities		(59	)		(10	)		(73	)		(19	)
Numerator for income (loss) per common share - basic and diluted	$	102,957		$	3,178		$	103,315		$	(3,325	)
Denominator:
Denominator for basic income (loss) per common share - weighted average shares		234,990			217,122			232,969			214,763
Effect of dilutive employee stock options and restricted share awards ⁽¹⁾		20			16			27			-
Denominator for diluted income (loss) per common share - weighted average shares		235,010			217,138			232,996			214,763

Income (loss) per common share - basic and diluted	$	0.44		$	0.01		$	0.44		$	(0.02	)

⁽¹⁾

The effect of dilutive securities for the three months ended June 30, 2017 and 2016 excludes 32,317 and 49,182 weighted average share equivalents, respectively, and 34,147 and 51,252 weighted average share equivalents for the six months ended June 30, 2017 and 2016, respectively, as their effect was anti-dilutive.