Net Income Per Share (Tables)

3 Months Ended

Jun. 30, 2011

Net income per share [Abstract]

Reconciliation of shares used in calculating basic and diluted net income per share

A reconciliation of shares used in calculating basic and diluted net income per share follows (in thousands):

	Three Months Ended
	June 30,
	2011		2010
Basic		285,801		300,950
Effect of assumed conversion of employee stock options		574		76
Diluted		286,375		301,026