Note 10 - Stockholders' Equity (Details) - Warrants Outstanding (USD $)	Mar. 31, 2014		Feb. 24, 2014	Dec. 31, 2013
Class of Warrant or Right [Line Items]
Warrants outstanding at January 1, 2014 (in Shares)	5,490,018			2,005,684
Warrants outstanding at January 1, 2014 (in Dollars per Item)			5.04
Warrants outstanding at March 31, 2014 (in Shares)	5,490,018			2,005,684
Warrants outstanding at March 31, 2014 (in Dollars per Item)			5.04
Issued (Member) | Warrant [Member] | Lead Investors [Member]
Class of Warrant or Right [Line Items]
Weighted average exercise price	$ 5.04	[1]
Issued (Member) | Warrant [Member] | Minimum [Member]
Class of Warrant or Right [Line Items]
Weighted average exercise price	$ 4.25	[2]
Issued (Member) | Warrant [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Weighted average exercise price	$ 5.10
Issued (Member) | Lead Investors [Member]
Class of Warrant or Right [Line Items]
Options (in Shares)	134,004	[1]
Issued (Member) | Lead Investors [Member] | Weighted Average [Member]
Class of Warrant or Right [Line Items]
Weighted average exercise price	$ 5.04	[1]
Issued (Member)
Class of Warrant or Right [Line Items]
Options (in Shares)	3,361,904	[2]
Issued (Member) | Weighted Average [Member]
Class of Warrant or Right [Line Items]
Weighted average exercise price	$ 4.68	[2]
Expired (Member) | Warrant [Member]
Class of Warrant or Right [Line Items]
Expired	$ 135.00
Expired (Member)
Class of Warrant or Right [Line Items]
Expired (in Shares)	(11,574)
Expired (Member) | Weighted Average [Member]
Class of Warrant or Right [Line Items]
Expired	$ 135.00
Warrant [Member] | Minimum [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding at January 1, 2014 (in Dollars per Item)	1.10			1.10
Warrants outstanding at March 31, 2014 (in Dollars per Item)	1.10			1.10
Warrant [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding at January 1, 2014 (in Dollars per Item)	124.20			124.20
Warrants outstanding at March 31, 2014 (in Dollars per Item)	124.20			124.20
Weighted Average [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding at January 1, 2014 (in Dollars per Item)	8.84			16.23
Warrants outstanding at March 31, 2014 (in Dollars per Item)	8.84			16.23

[1] On February 24, 2014, the Company's board of directors approved an amendment to 2012 and 2013 warrant grants to investors of pre-Merger Immune Ltd. Such investors were originally granted with the option to purchase 20% instead of 50% of the shares of Immune Ltd. Therefore, as a remedy, the Company issued additional 134,004 warrants, at an exercise price of $5.04. The total fair value of $274 was determined using the Black-Sholes option pricing model, with an expected term of 1.95-4.48 years, volatility of 90%, risk free interest rate of 0.27%-1.43%. Because the issuance reflects a correction to previous grant, these warrants were accounted for within equity, following the accounting for the original transaction. The impact on current, as well as on any prior financial period was determined not to be material.

[2] As part of the units given to participants in the March 2014 Financing, the Company granted its investors with (i) a five-year warrant to purchase 50% or 100% (as per the agreement made with each investor) of the shares of common stock issuable for conversion of Preferred C stock shares, at an exercise price equal to the lower of $4.25 and 125% of the conversion price of the Preferred C Stock then in effect, and a five-year warrant to purchase 50% or 100% (as per the agreement made with each investor) of a share of common stock at an exercise price equal to the lower of $5.10 and 150% of the conversion price of the Preferred C Stock then in effect. For further discussion refer to Notes 3 and 9.