Net Income Per Share

9 Months Ended

Sep. 30, 2011

The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts):



	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2011			2010			2011			2010
Numerator:
Net income	$	19,654		$	39,761		$	62,522		$	85,405
Denominator:
Weighted average common shares and denominator for basic calculation:
Weighted average common shares outstanding	83,534			84,275			83,795			85,924
Less: Unvested restricted stock	(129		)	(329		)	(155		)	(433		)
Denominator for basic calculation	83,405			83,946			83,640			85,491
Weighted average effects of dilutive equity-based compensation awards:
Employee stock options and stock appreciation rights	1			319			12			776
Restricted stock awards	1,385			1,231			1,112			1,236
Denominator for diluted calculation	84,791			85,496			84,764			87,503
Net income per share—basic	$	0.24		$	0.47		$	0.75		$	1.00
Net income per share—diluted	$	0.23		$	0.47		$	0.74		$	0.98

The following table sets forth (in thousands) the weighted average number of options to purchase shares of common stock, stock appreciation rights, restricted stock awards and equity awards subject to performance or market conditions which were not included in the calculation of diluted per share amounts because the effects would be anti-dilutive:



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2011	2010	2011	2010
Options to purchase shares of common stock and restricted stock awards	2,509	922	2,447	162
Stock appreciation rights	5,894	2,508	5,762	1,727
Total	8,403	3,430	8,209	1,889

The following table sets forth (in thousands) the number of equity awards that are contingently issuable which were not included in the calculation of diluted shares as the required market and/or performance conditions had not been met as of September 30, 2011 nor 2010:



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2011	2010	2011	2010
Options to purchase shares of common stock and restricted stock awards	890	708	890	708
Stock appreciation rights	800	800	800	800
Total	1,690	1,508	1,690	1,508