Net Income Per Share

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Net Income Per Share

5. NET INCOME PER SHARE

Basic earnings per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding. For the purposes of calculating diluted earnings per share, the denominator includes both the weighted-average number of shares of common stock outstanding and the number of dilutive common stock equivalents such as stock options and unvested restricted stock, as determined using the treasury stock method. Shares used in calculating basic and diluted earnings per share for the three and six months ended June 30, 2014 and 2013, respectively, are as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Weighted-average number of shares of common stock outstanding-basic		60,523		60,724		60,372		60,550
Dilutive common stock equivalents relating to options and restricted stock		2,887		1,712		3,143		1,391
Weighted-average number of shares of common stock outstanding-diluted		63,410		62,436		63,515		61,941

Options and unvested restricted stock to purchase 0.3 million and 3.7 million shares of common stock for the three month periods ended June 30, 2014 and 2013, respectively, were not included in the calculation of diluted net income per share as their effect would be anti-dilutive. Options and unvested restricted stock to purchase 0.3 million and 4.0 million shares of common stock for the six month periods ended June 30, 2014 and 2013, respectively, were not included in the calculation of diluted net income per share as their effect would be anti-dilutive.