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Fair Value Measurements (Liabilities Measured at Fair Value on Recurring Basis) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Change in fair value of derivatives-other income $ 170 $ 1,140 $ (339)
Significant unobservable inputs (Level 3)
     
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Balance at beginning of year 170 1,310  
Change in fair value of derivatives-other income 170 1,140  
Balance at end of year   $ 170