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Note 9 - Derivative Financial Instruments (Details) - Details about Accumulated Other Comprehensive Income (Loss) Components - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Accumulated other comprehensive income (loss) component $ 1,034 $ 1,031 $ 1,050
Interest Expense [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Accumulated other comprehensive income (loss) component (1,034) (1,031) (1,050)
Interest Expense [Member] | Interest Rate Swap [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Accumulated other comprehensive income (loss) component $ 1,034 $ 1,031 $ 1,050