Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Derivative Instruments [Abstract]

Components of derivative instruments

	September 30, 2012		December 31, 2011
	(in thousands)
MHR Convertible Note	$	1,441		7,367
August 2007 Warrants		0		12
August 2009 Warrants		612		540
June 2010 MHR Warrants		126		351
August 2010 Warrants		874		735
August 2010 MHR Waiver Warrants		168		142
July 2011 Warrants		1,134		929
July 2011 MHR Waiver Warrants		150		123
	$	4,505	$	10,199