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Schedule of Stock Repurchases (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Stockholders Equity [Line Items]      
Common stock and additional paid-in-capital reductions $ 82,617 $ 42,679 $ 42,262
Charges to retained earnings $ 205,086 $ 103,589 $ 86,205
Common Stock
      
Stockholders Equity [Line Items]      
Shares purchased and retired 10,373 5,632 5,688