Net Income Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Net Income Per Share

14) Net Income Per Share

The following table sets forth the computation of basic and diluted net income per share:

	Three Months Ended March 31,
	2013		2012
Numerator:
Net income	$	5,761	$	22,768
Denominator:
Shares used in net income per common share – basic		52,773,000		52,504,000
Effect of dilutive securities:
Stock options, restricted stock and employee stock purchase plan		586,000		718,000
Shares used in net income per common share – diluted		53,359,000		53,222,000
Net income per common share:
Basic	$	0.11	$	0.43
Diluted	$	0.11	$	0.43

Basic earnings per share (“EPS”) is computed by dividing income available to common stockholders by the weighted-average number of common shares outstanding during the period. The computation of diluted EPS is similar to the computation of basic EPS except that the denominator is increased to include the number of additional common shares that would have been outstanding (using the treasury stock method) if securities containing potentially dilutive common shares (stock options and restricted stock units) had been converted to such common shares, and if such assumed conversion is dilutive.

As of March 31, 2013, stock options and restricted stock units relating to an aggregate of approximately 1,261,000 shares were outstanding. For the three months ended March 31, 2013 and 2012, the potential dilutive effect of approximately 98,000 and 97,000 weighted-average shares, respectively, of restricted stock units and stock options were excluded from the computation of diluted weighted-average shares outstanding as the shares would have an anti-dilutive effect on EPS.