Net Income (Loss) per Share

9 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Net Income (Loss) per Share

Net Income per Share

Net income per basic share is calculated based on the weighted-average number of outstanding common shares. Net income per diluted share is calculated based on the weighted-average number of outstanding common shares plus the effect of potential dilutive common shares. When the Company reports net income, the calculation of net income per diluted share excludes shares underlying outstanding stock options with exercise prices that exceed the average market price of the Company’s common stock for the period and certain options and restricted stock units with unrecognized compensation cost, as the effect would be antidilutive. Potential dilutive common shares are composed of shares of common stock issuable upon the exercise of stock options and restricted stock units. The following table presents net income per basic and diluted share for the three and nine months ended December 31, 2012 and 2011 (in thousands, except share and per share amounts):

	Three Months Ended				Nine Months Ended
	December 31, 2012		December 31, 2011		December 31, 2012		December 31, 2011
Net income (A)	$	17,389	$	22,478	$	15,448	$	27,743
Weighted average outstanding shares of common stock (B)	33,934,383		37,154,446		35,099,660		38,167,304
Dilutive effect of employee stock options and restricted stock units	50,730		449,321		68,837		355,403
Common stock and potential dilutive common shares (C)	33,985,113		37,603,767		35,168,497		38,522,707
Net income per share:
Basic (A/B)	$	0.51	$	0.60	$	0.44	$	0.73
Diluted (A/C)	$	0.51	$	0.60	$	0.44	$	0.72

Antidilutive shares not included in the net income per diluted share calculation for the three and nine months ended December 31, 2012 were 3,663,282. Antidilutive shares not included in the net income per diluted share calculation for the three and nine months ended December 31, 2011 were 2,113,159 and 2,556,725, respectively.