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Note 2 - Significant Accounting Policies and Methods of Application (Details) - USD ($)
$ in Millions
Jun. 30, 2015
Jun. 30, 2014
Tropical Shipping [Member]    
Note 2 - Significant Accounting Policies and Methods of Application (Details) [Line Items]    
Investments and Cash   $ 15
Inaccessible [Member]    
Note 2 - Significant Accounting Policies and Methods of Application (Details) [Line Items]    
Inventory, Gross $ 12