The following table presents information necessary to calculate net income per share for the three and six months ended June 30, 2013 and 2012 as well as potentially dilutive securities excluded from the weighted average number of diluted common shares outstanding because their inclusion would have been anti-dilutive (in thousands, except per share amounts):


	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
BASIC EPS:
Net income	$	40,768		$	92,538		$	96,998		$	189,812
Adjust for income attributed to holders of non-vested restricted stock		(392	)		(806	)		(882	)		(1,550	)

Income attributed to common stockholders	$	40,376		$	91,732		$	96,116		$	188,262

Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock		145,465			153,269			145,148			153,947

Basic net income per common share	$	0.28		$	0.60		$	0.66		$	1.22

DILUTED EPS:
Income attributed to common stockholders	$	40,376		$	91,732		$	96,116		$	188,262
Add incremental earnings related to potential common shares		2			—			6			—

Adjusted income attributed to common stockholders	$	40,378		$	91,732		$	96,122		$	188,262

Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock		145,465			153,269			145,148			153,947
Add dilutive effect of potential common shares		909			386			1,144			597

Weighted average number of diluted common shares outstanding		146,374			153,655			146,292			154,544

Diluted net income per common share	$	0.28		$	0.60		$	0.66		$	1.22

Potentially dilutive securities excluded as anti-dilutive		4,015			5,969			4,065			5,529