CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Revenue	$ 1,555	$ 1,249	$ 2,197
Operating expense:
Royalty expense	5,265	6,100	0
Research and development	2,277	2,004	1,782
Selling, general and administrative	23,190	28,310	29,002
Gain on settlement (Note 3)	0	(23,000)	0
Total operating expenses	30,732	13,414	30,784
Loss from operations	(29,177)	(12,165)	(28,587)
Gain (loss) on change in value of embedded derivative and warrants	(117)	2,238	1,608
Interest income, net	68	40	122
Loss before taxes	(29,226)	(9,887)	(26,857)
Income tax expense	(8)	(15)	(751)
Net loss	$ (29,234)	$ (9,902)	$ (27,608)
Basic and diluted loss per share (in dollars per share)	$ (0.56)	$ (0.19)	$ (0.54)
Weighted average shares outstanding basic and diluted (in shares)	52,384,494	51,570,472	51,188,006