Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Reconciliation of Shares Used in Computation of Basic and Diluted Net Income Per Share

A reconciliation of the shares used in the computation of basic and diluted net income per share is as follows:

	Three Months Ended March 31,
(SHARES IN THOUSANDS)	2013		2012
Basic		81,291		80,777
Assumed dilution under stock plans		733		890
Diluted		82,024		81,667