The following table illustrates basic and diluted EPS for the three months ended June 30, 2013 and 2012:


	Three months ended June 30,
	2013					2012
(in thousands, except per share data)	Common Stock			Participating Securities		Common Stock			Participating Securities
Basic EPS:
Net income	$	57,716					66,710
Less income allocated to nonvested awards		(175	)		175		(224	)		224

Net income allocated to common stock for EPS calculation (a)	$	57,541			175		66,486			224

Average common shares outstanding (b)		187,147			591		188,420			650

Basic EPS (a)/(b)	$	0.31			0.30		0.35			0.34

Diluted EPS:
Net income	$	57,716					66,710
Less income allocated to nonvested awards		(175	)		175		(223	)		223

Net income allocated to common stock for EPS calculation (c)	$	57,541			175		66,487			223

Average common shares outstanding		187,147			591		188,420			650
Increase due to assumed issuance of shares related to common equivalent shares outstanding		981					1,270

Average common and common equivalent shares outstanding (d)		188,128			591		189,690			650

Diluted EPS (c)/(d)	$	0.31			0.30		0.35			0.34

The following table illustrates basic and diluted EPS for the six months ended June 30, 2013 and 2012:


	Six months ended June 30,
	2013					2012
(in thousands, except per share data)	Common Stock			Participating Securities		Common Stock			Participating Securities
Basic EPS:
Net income	$	114,745					123,106
Less income allocated to nonvested awards		(385	)		385		(421	)		421

Net income allocated to common stock for EPS calculation (a)	$	114,360			385		122,685			421

Average common shares outstanding (b)		186,633			644		188,236			658

Basic EPS (a)/(b)	$	0.61			0.60		0.65			0.64

Diluted EPS:
Net income	$	114,745					123,106
Less income allocated to nonvested awards		(382	)		382		(419	)		419

Net income allocated to common stock for EPS calculation (c)	$	114,363			382		122,687			419

Average common shares outstanding		186,633			644		188,236			658
Increase due to assumed issuance of shares related to common equivalent shares outstanding		1,576					1,159

Average common and common equivalent shares outstanding (d)		188,209			644		189,395			658

Diluted EPS (c)/(d)	$	0.61			0.59		0.65			0.64