Note 20 - The Financing and Warrants Liabilities (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended
	Jan. 17, 2018	Jun. 30, 2018	Mar. 31, 2018
Warrants and Rights Outstanding	$ 2,275	$ 1,327	$ 801
Investor Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	645,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 6.60
Class of Warrant or Right, Term	2 years 180 days
Warrants and Rights Outstanding	$ 1,890	1,103	664
Placement Agent Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	129,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 6.60
Class of Warrant or Right, Term	3 years
Warrants and Rights Outstanding	$ 385	224	$ 137
The Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 6.60
Private Placement [Member]
Stock Issued During Period, Shares, New Issues	2,150,001
Shares Issued, Price Per Share	$ 5.15
Proceeds from Issuance or Sale of Equity, Total	$ 11,100	$ 11,073
Placement Agent Fee, Percent of Gross Proceeds	6.00%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	$ 1,200
Placement Agent Fee	660
Direct Legal Fees	$ 150