Note 12 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	12 Months Ended
	Aug. 22, 2016	Aug. 03, 2016	Feb. 29, 2016	Jun. 30, 2016	Jun. 30, 2015
Subsequent Event [Member] | Three-Year Debentures [Member]
Debt Conversion, Original Debt Principal, Amount	$ 12,500
Debt Conversion, Original Debt Interest, Amount	$ 8,250
Debt Conversion, Converted Instrument, Shares Issued	6,102,941
Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues		600,000
Shares Issued, Price Per Share		$ 4.10
Proceeds from Issuance of Common Stock		$ 2,200
Debt Conversion, Converted Instrument, Shares Issued	6,102,941
Stock Issued During Period, Shares, New Issues			735,294
Proceeds from Issuance of Common Stock				$ 2,463