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Share Repurchase Program - Additional Information (Detail)
6 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Sep. 14, 2009
Equity [Abstract]      
Number of shares purchased under the repurchase program     1,000,000us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Number of shares repurchased 0us-gaap_StockRepurchasedDuringPeriodShares 0us-gaap_StockRepurchasedDuringPeriodShares