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Share Repurchase Program - Additional Information (Detail) (USD $)
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Sep. 14, 2009
Number of shares purchased under the repurchase program       1,000,000
Number of shares repurchased 0 0 213,243  
Shares repurchased, average price     $ 1.29