Note 20 - The Financing and Warrants Liabilities - Warrant Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Jan. 17, 2018
Fair value of the Warrants	$ 1,327		$ 1,327		$ 801	$ 2,275
Change in fair value of warrants	526		(948)
Investor Warrants [Member]
Fair value of the Warrants	1,103		1,103		664	1,890
Change in fair value of warrants	439		(787)
Placement Agent Warrants [Member]
Fair value of the Warrants	224		224		$ 137	$ 385
Change in fair value of warrants	$ 87		$ (161)