Net Income Per Share

3 Months Ended

Apr. 30, 2011

Net Income Per Share [Abstract]

Net Income Per Share [Text Block]

Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted-average common shares and stock units outstanding. Diluted net income per share is computed by dividing net income by the weighted-average common and common equivalent shares outstanding (which includes the shares issuable upon exercise of employee stock options net of shares assumed purchased with the option proceeds) and stock units outstanding. Certain outstanding options were excluded from the diluted net income per-share calculations because their effect would have been anti-dilutive. For the three-month periods ended April 30, 2011 and April 30, 2010, 136 and 224 shares were excluded, respectively. Details of the earnings per share computation are presented below:

	Three Months Ended
	April 30, 2011		April 30, 2010
Numerator:
Net income	$	15,716	$	12,945
Denominator:
Weighted average common shares outstanding	18,075		18,030
Weighted average stock units outstanding	27		21
Denominator for basic calculation	18,102		18,051
Weighted average common shares outstanding	18,075		18,030
Weighted average stock units outstanding	27		21
Dilutive impact of stock options	110		7
Denominator for diluted calculation	18,212		18,058
Net income per share — basic	$	0.87	$	0.72
Net income per share — diluted	$	0.86	$	0.72