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Derivatives (Detail Textuals) - Options - Cash flow hedges
$ in Thousands
12 Months Ended
Jun. 30, 2015
USD ($)
Derivative [Line Items]  
Unrecognized gains (losses) on derivative instruments recorded in earnings within the next twelve months $ (300)
Other comprehensive income (loss)  
Derivative [Line Items]  
Unrecognized gains (losses) on derivative instruments $ (1,542)