Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Measurements [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis as of September 30, 2012 and December 31, 2011 are as follows:

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of September 30, 2012		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	94,235	$	94,235	$	-	$	-
Warrant liability	$	21,528	$	-	$	21,528	$	-

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2011		Quoted Prices in Active Markets for Identical Assets/Liabilities    (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	103,736	$	103,736	$	-	$	-
Warrant liability	$	19,425	$	-	$	19,425	$	-