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Long-term Debt - Effect of derivative instruments (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Long-Term Debt [Abstract]    
Gain (loss) recognized in other comprehensive income $ 205 $ (564)
Amounts reclassified to earnings from accumulated other comprehensive loss 1,598 333
Net current period other comprehensive income (loss) $ 1,803 $ (231)