Net Income Per Common Share

9 Months Ended

Sep. 30, 2011

Net Income Per Common Share [Abstract]

Net Income Per Common Share

12. Net Income Per Common Share

Basic net income per common share is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during each period. Diluted net income per common share is computed by dividing net income available to common stockholders for the period by the weighted average number of common shares that would have been outstanding assuming the issuance of common shares for all potentially dilutive common shares outstanding during the reporting period.

The following is a reconciliation of the denominator of the basic net income per common share computation to the denominator of the diluted net income per common share computation:

	Three months ended				Nine months ended
	September 30,				September 30,
	2011		2010		2011		2010
Weighted average shares used for the basic net income per share computation		126,376,201		103,830,029		123,921,317		103,781,108
Incremental shares from share-based compensation		206,408		146,994		91,825		106,571
Adjusted weighted average shares used for diluted net income per share computation		126,582,609		103,977,023		124,013,142		103,887,679
Unvested shares from share-based compensation that were anti-dilutive		262,076		87,000		12,510		87,000