Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2015

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 June 30		Six months ended June 30
	2015	2014	2015	2014
	(in thousands)
Weighted average shares outstanding (basic)	176,433	188,139	177,446	188,799
Impact of common stock equivalents	1,098	1,043	1,042	1,033
Weighted average shares outstanding (diluted)	177,531	189,182	178,488	189,832