Consolidated Statements Of Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue, reduction of revenue relating to a common stock warrant	$ 0	$ 0	$ 0	$ 2,500