Net Income Per Share

3 Months Ended

Mar. 31, 2012

Net Income Per Share [Abstract]

Net Income Per Share

3. Net Income Per Share

The computation of basic and diluted net income per share was as follows (in thousands, except per share data):

	Three Months Ended				Nine Months Ended
	March 31,				March 31,
	2012		2011		2012		2011
Numerator:
Net income	$	11,446	$	13,496	$	41,844	$	49,873
Denominator:
Shares, basic		33,389		33,992		32,935		34,118
Effect of dilutive share-based awards		1,790		1,354		1,439		1,447
Shares, diluted		35,179		35,346		34,374		35,565
Net income per share:
Basic	$	0.34	$	0.40	$	1.27	$	1.46
Diluted	$	0.33	$	0.38	$	1.22	$	1.40

Our basic net income per share amounts for each period presented have been computed using the weighted average number of shares of common stock outstanding. Our diluted net income per share amounts for each period presented include the weighted average effect of potentially dilutive shares. We use the “treasury stock” method to determine the dilutive effect of our stock options, deferred stock units, or DSUs, and convertible notes.

Dilutive net income per share amounts do not include the weighted average effect of 1,219,495 and 3,471,863 share-based awards that were outstanding during the three months ended March 31, 2012 and 2011, and 3,833,213 and 3,507,168 share-based awards that were outstanding during the nine months ended March 31, 2012 and 2011, respectively. These share-based awards were not included in the computation of diluted net income per share because their effect would have been antidilutive.