Net Income Per Share

3 Months Ended

Mar. 31, 2014

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,
	2014		2013
Net income - basic and diluted	$	65,443	$	98,874
(Shares in thousands)
Weighted average shares - basic	98,709		96,878
Effect of dilutive securities:
Stock options	9,879		10,276
Restricted stock	401		325
Warrants	3,162		1,890
Dilutive potential shares	13,442		12,491
Weighted average shares - diluted	112,151		109,369
Net income per share - basic	$	0.66	$	1.02
Net income per share - diluted	$	0.58	$	0.90

Shares which have been excluded from the March 31, 2014 and 2013 diluted per share amounts because their effect would have been antidilutive, include the following:

	Three months ended March 31,
(Shares in thousands)	2014	2013
Stock options	3,646	3,868
Convertible senior notes	4,761	4,761