Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Reconciliation of Weighted Average Common Shares Outstanding

A reconciliation of weighted average shares outstanding used to calculate basic net income per share and diluted net income per share follows:

	Three months ended September 30		Nine months ended September 30
	2013	2012	2013	2012
	(in thousands)
Weighted average shares outstanding (basic)	192,251	198,956	193,926	199,371
Effect of dilutive securities	1,008	852	1,000	950
Weighted average shares outstanding (diluted)	193,259	199,808	194,926	200,321