Condensed Consolidated Statements Of Operations (Parenthetical) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Condensed Consolidated Statements Of Operations [Abstract]
General and administrative, non-cash stock-based compensation	$ 1.00	$ 1.45	$ 1.00	$ 1.50