Stockholders' Equity (Summary Of The Restricted Stock Unit Activity) (Details) (Restricted Stock Units [Member], USD $)	9 Months Ended
	Sep. 30, 2012
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, December 31, 2011	98,820
Number of Shares, Granted	486,926
Number of Shares, Vested	(29,919)
Number of Shares, Forfeited	(27,861)
Number of Shares, Outstanding, June 30, 2012	527,966
Weighted Average Grant Date Fair Value per Share/Unit, Outstanding, December 31, 2011	$ 10.89
Weighted Average Grant Date Fair Value per Share/Unit, Granted	$ 1.89
Weighted Average Grant Date Fair Value per Share/Unit, Vested	$ 10.89
Weighted Average Grant Date Fair Value per Share/Unit, Forfeited	$ 9.57
Weighted Average Grant Date Fair Value per Share/Unit, Outstanding, June 30, 2012	$ 2.66