Note 4 - Preferred Stock - Preferred Stock Included in Equity (Details) (Parentheticals) - USD ($)	Jun. 30, 2015	Jun. 30, 2014
Series D Preferred Stock [Member]
Par value (in dollars per share)	$ 0.01	$ 0.01
Authorized (in shares)	1,297,537	1,297,537
Preferred Stock, Shares Issued	1,297,537	1,297,537
Preferred Stock, Shares Outstanding	342,829	384,495
Liquidation preference	$ 206,000	$ 231,000
Series E Preferred Stock [Member]
Par value (in dollars per share)	$ 0.01	$ 0.01
Authorized (in shares)	3,000	3,000
Preferred Stock, Shares Issued	1,191	1,191
Preferred Stock, Shares Outstanding	632	862
Liquidation preference	$ 632,000	$ 862,000
Par value (in dollars per share)	$ 0.01	$ 0.01
Authorized (in shares)	1,300,537	1,300,537
Preferred Stock, Shares Issued	1,298,728	1,298,728
Preferred Stock, Shares Outstanding	343,461	385,357
Liquidation preference	$ 838,000	$ 1,093,000