Note 1 - Description of Business and Basis of Presentation (Details Textual) $ / shares in Units, $ in Thousands				1 Months Ended	12 Months Ended
	Aug. 22, 2016 shares	Aug. 03, 2016 USD ($) $ / shares shares	Mar. 04, 2016 shares	Feb. 29, 2016 USD ($) shares	Jun. 30, 2016 USD ($) shares	Jun. 30, 2015 USD ($) shares	Jun. 30, 2014 USD ($)
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio			20
Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues | shares		600,000
Shares Issued, Price Per Share | $ / shares		$ 4.10
Proceeds from Issuance of Common Stock		$ 2,200
Debt Conversion, Converted Instrument, Shares Issued | shares	6,102,941
Common Stock, Shares Authorized | shares			350,000,000		350,000,000	350,000,000
Stock Issued During Period, Shares, New Issues | shares				735,294
Proceeds from Issuance of Common Stock					$ 2,463
Cash and Cash Equivalents, at Carrying Value					5,835	3,357	$ 14,811
Working Capital					7,301
Retained Earnings (Accumulated Deficit)					(156,262)	(137,674)
Gross Proceeds from Financing Transaction				$ 15,000
Repayments of Convertible Debt				7,500	$ 6,444
Net Proceeds from Financing Transaction				$ 7,300