Net Income Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Net Income Per Share

Net Income Per Share

The Company’s basic net income per share amounts have been computed by dividing net income by the weighted average number of shares of Common Stock and Class A Stock outstanding. Net income per share is presented on a combined basis, inclusive of Common Stock and Class A Stock outstanding, as each class of stock has equivalent economic rights. Diluted net income per share includes the potential dilutive effect of other securities as if such securities were converted or exercised during the period, when the effect is dilutive. The calculations of basic and diluted net income per share are as follows:

	Three Months Ended March 31,
	2013		2012
Net income - basic and diluted	$	98,874	$	11,651
(Shares in thousands)
Weighted average shares - basic	96,878		93,446
Effect of dilutive securities:
Stock options	10,276		13,630
Restricted stock	325		658
Warrants	1,890
Dilutive potential shares	12,491		14,288
Weighted average shares - diluted	109,369		107,734
Net income per share - basic	$	1.02	$	0.12
Net income per share - diluted	$	0.90	$	0.11

Shares which have been excluded from the March 31, 2013 and 2012 diluted per share amounts because their effect would have been antidilutive, include the following:

	Three Months Ended March 31,
(Shares in thousands)	2013	2012
Stock options	3,868	89
Convertible senior notes	4,761	4,761
Warrants		4,761