Basic and Diluted Net Income Per Share

9 Months Ended

Sep. 30, 2013

Earnings Per Share, Basic and Diluted [Abstract]

Earnings Per Share [Text Block]

4.     Basic and Diluted Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted average number of common and dilutive common equivalent shares outstanding during the period. The number of dilutive common equivalent shares outstanding during the period has been determined in accordance with the treasury-stock method. Common equivalent shares consist of common stock issuable upon the exercise of outstanding options and common stock issuable upon the vesting of outstanding, unvested SUAs.

Basic and diluted weighted average common shares outstanding are as follows:

	Three Months Ended				Nine months Ended
	September 30,		September 30,		September 30,		September 30,
	2013		2012		2013		2012
	(in thousands)
Weighted average common shares outstanding, basic		5,312		5,272		5,301		5,256
Dilutive common equivalent shares		19		18		13		10
Weighted average common shares outstanding, dilutive		5,331		5,290		5,314		5,266

For the three months ended September 30, 2013 and 2012, options to purchase 153 thousand and 231 thousand common shares, respectively, were outstanding but not included in the diluted weighted average common share calculation as the effect would have been antidilutive. The amounts for the nine month period ended September 30, 2013 and 2012 were 167 thousand and 264 thousand common shares, respectively.