Earnings Per Share

6 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Earnings Per Share

Note 2 — Earnings Per Share

     The following table sets forth the calculation of basic and diluted weighted average shares outstanding and earnings per share for the indicated periods.

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
	(in thousands, except per share data)
Income (numerator):
Net income	$	57,196		$	27,872		$	96,988		$	53,290
Net income attributable to participating securities		(1,192	)		(485	)		(2,022	)		(927	)
Net income attributable to common stock — basic and diluted	$	56,004		$	27,387		$	94,966		$	52,363
Weighted average shares (denominator):
Weighted average shares — basic		47,961			47,654			47,930			47,631
Diluted effect of stock options		45			24			43			26
Weighted average shares — diluted		48,006			47,678			47,973			47,657
Basic income per common share	$	1.17		$	0.57		$	1.98		$	1.10
Diluted income per common share	$	1.17		$	0.57		$	1.98		$	1.10

     Stock options that were considered antidilutive because the exercise price of the option exceeded the average price of our common stock for the applicable period totaled approximately 398,000 and 422,000 shares for the three months ended June 30, 2011 and 2010, respectively. Stock options that were considered antidilutive totaled approximately 398,000 and 423,000 shares during the six months ended June 30, 2011 and 2010, respectively.

     During the three months ended June 30, 2011 and 2010, approximately 73,000 and 55,000 shares of common stock, respectively, were issued upon the vesting of restricted stock by employees and nonemployee directors. During the six months ended June 30, 2011 and 2010, approximately 253,000 and 195,000 shares of common stock, respectively, were issued upon the vesting of restricted stock by employees and nonemployee directors.