CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2013	$ 39,497	$ 6	$ 282	$ 283,207	$ (243,954)	$ (44)
Balance (in Shares) at Dec. 31, 2013		579	28,167,248
Conversion of Series N preferred shares (Shares)		(4)	160
Stock-based compensation expense	484			484
Net loss	(26,514)				(26,514)
Foreign currency translation adjustments	10					10
Ending Balance at Dec. 31, 2014	13,477	$ 6	$ 282	283,691	(270,468)	(34)
Balance (in shares) at Dec. 31, 2014		575	28,167,408
Conversion of Series N preferred shares (Shares)		(6)	240
Issuance of common stock from restricted stock awards			$ 3	(3)
Issuance of common stock from restricted stock awards (shares)			300,000
Stock-based compensation expense	358			358
Net loss	(10,421)				(10,421)
Foreign currency translation adjustments	(20)					(20)
Ending Balance at Dec. 31, 2015	$ 3,394	$ 6	$ 285	$ 284,046	$ (280,889)	$ (54)
Balance (in shares) at Dec. 31, 2015		569	28,467,648