Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Net Loss Per Share

The weighted average of these potentially dilutive securities has been excluded from the diluted net loss per share calculation and is as follows (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2012		2011		2012		2011
Stock options		14,301		14,471		13,836		11,423