Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2012

Earnings Per Share [Abstract]

Reconciliation of Weighted Average Common Shares Outstanding

A reconciliation of weighted average common shares outstanding used to calculate basic net income per common share and diluted net income per common share follows for the three months ended March 31:

	2012	2011
	(in thousands)
Weighted average shares outstanding (basic)	199,492	198,599
Effect of dilutive securities	852	687
Weighted average shares outstanding (diluted)	200,344	199,286