Note 4 - Derivative Obligations (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Aug. 31, 2015
Series A Warrant [Member]
Class of Warrant or Right, Outstanding	8,088,235	8,088,235	8,088,235
Series B Warrant [Member]
Class of Warrant or Right, Outstanding	4,448,529	4,448,529	4,448,529
Warrants Exercised	503,696
Shares Issued for Cashless Exercise of Warrants	2,134,203
Warrants Not Settleable in Cash, Fair Value Disclosure	$ 33	$ 33
Fair Value Adjustment of Warrants	(16)
Fair Value Assumptions, Expected Volatility Rate		88.00%
Fair Value Inputs, Discount Rate		0.57%
Fair Value Assumptions, Expected Term		1 year 73 days
Fair Value Assumptions, Expected Dividend Rate		0.00%
Gain (Loss) on Cashless Exercise of Warrants		$ 564
Derivative Liability	4,282	4,282
Derivative, Gain (Loss) on Derivative, Net	2,180	$ 3,606
Fair Value Assumptions, Expected Volatility Rate		77.00%
Fair Value Assumptions, Expected Term		5 years
Fair Value Assumptions, Expected Dividend Rate		0.00%
Gain (Loss) on Cashless Exercise of Warrants	$ (564)	$ (564)