Annual report pursuant to Section 13 and 15(d)

Note 17 - Financial Instruments (Details Textual)

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Note 17 - Financial Instruments (Details Textual)
12 Months Ended
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year 0  
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities $ 0  
Restricted Cash and Investments, Noncurrent 8,000,000 $ 8,500,000
Municipal Debt Securities, at Carrying Value 2,200,000 18,200,000
Proceeds from Sale of Available-for-sale Securities 15,400,000 $ 14,900,000
Impairment of Long-Lived Assets to be Disposed of $ 800,000