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Derivative Financial Instruments - Pretax Effect of Derivative Instruments on Earnings and OCI (Details) (Cash Flow Hedging [Member], USD $)
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Cash Flow Hedging [Member]
     
Derivative Instruments, Gain (Loss) [Line Items]      
Net gains recognized in earnings (effective portion) $ 55,000 $ 0 $ 0
Net losses recognized in other comprehensive income (loss) (effective portion) (7,921,000) 0 0
Net losses recognized in earnings (ineffective portion) $ (447,000) $ 0 $ 0