Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income Per Share

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Numerator:
Net income	$	29,117	$	2,458	$	81,586	$	15,539
Denominator:
Shares used in net income per common share – basic		53,054,000		53,165,000		53,276,000		52,998,000
Effect of dilutive securities:
Stock options, restricted stock and employee stock purchase plan		256,000		348,000		265,000		412,000
Shares used in net income per common share – diluted		53,310,000		53,513,000		53,541,000		53,410,000
Net income per common share:
Basic	$	0.55	$	0.05	$	1.53	$	0.29
Diluted	$	0.55	$	0.05	$	1.52	$	0.29