Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Weighted Average Securities Excluded from Diluted 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 March 31,
	2013		2012
Stock options		15,343		13,896
Convertible subordinated notes		—		9,989
Total		15,343		23,885