Note 20 - The Financing and Warrants Liabilities - Fair Value of Warrants (Details)	Jun. 30, 2018 yr	Mar. 31, 2018 yr	Jan. 17, 2018 yr
Measurement Input, Share Price [Member] | Investor Warrants [Member]
Fair value of the warrants	2.52	1.67	3.98
Measurement Input, Share Price [Member] | Placement Agent Warrants [Member]
Fair value of the warrants	2.52	1.67	3.98
Measurement Input, Expected Term [Member] | Investor Warrants [Member]
Fair value of the warrants	2.1	2.3	2.5
Measurement Input, Expected Term [Member] | Placement Agent Warrants [Member]
Fair value of the warrants	2.55	2.8	3
Measurement Input, Risk Free Interest Rate [Member] | Investor Warrants [Member]
Fair value of the warrants	0.0253	0.0235	0.0222
Measurement Input, Risk Free Interest Rate [Member] | Placement Agent Warrants [Member]
Fair value of the warrants	0.0256	0.025	0.0239
Measurement Input, Expected Dividend Rate [Member] | Investor Warrants [Member]
Fair value of the warrants
Measurement Input, Expected Dividend Rate [Member] | Placement Agent Warrants [Member]
Fair value of the warrants
Measurement Input, Price Volatility [Member] | Investor Warrants [Member]
Fair value of the warrants	1.74	1.64	1.58
Measurement Input, Price Volatility [Member] | Placement Agent Warrants [Member]
Fair value of the warrants	1.59	1.52	1.47
Measurement Input, Exercise Price [Member] | Investor Warrants [Member]
Fair value of the warrants	6.6	6.6	6.6
Measurement Input, Exercise Price [Member] | Placement Agent Warrants [Member]
Fair value of the warrants	6.6	6.6	6.6
Measurement Input, Quoted Price [Member] | Investor Warrants [Member]
Fair value of the warrants	1.71	1.03	2.93
Measurement Input, Quoted Price [Member] | Placement Agent Warrants [Member]
Fair value of the warrants	1.74	1.06	2.99