CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total		Common Stock [Member]		Additional Paid-in Capital [Member]		Accumulated Deficit [Member]
Balance at Dec. 31, 2014	$ 31,180		$ 93	[1]	$ 216,792	[1]	$ (185,705)
Reclassification of derivative warrants to equity warrants	175		0	[1]	175	[1]	0
Stock-based compensation	1,872		0	[1]	1,872	[1]	0
Net loss for the period	(6,976)		0	[1]	0	[1]	(6,976)
Balance at Mar. 31, 2015	26,251		93	[1]	218,839	[1]	(192,681)
Balance at Dec. 31, 2015	40,516	[1]	132		237,246		(196,862)
Reclassification of derivative warrants to equity warrants	0
Issuance of common stock for repayment of convertible debt and related interest	2,996		18		2,978		0
Stock-based compensation	463		0		463		0
Net loss for the period	(3,955)		0		0		(3,955)
Balance at Mar. 31, 2016	$ 40,020	[1]	$ 150		$ 240,687		$ (200,817)

[1] Adjusted to reflect the impact of the 1:10 reverse stock split that became effective on November 27, 2015.