Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Net Loss Per Share (Tables) [Abstract]

Net Loss Per Share

	Three months ended				Six months ended
	June 30,				June 30,
	2011		2010		2011		2010
Convertible subordinated notes		9,989		9,989		9,989		9,989
Stock options		11,620		9,358		11,308		8,971
Total		21,609		19,347		21,297		18,960