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Share Repurchase Program - Additional Information (Detail)
3 Months Ended 9 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Sep. 14, 2009
Equity Class Of Treasury Stock [Line Items]          
Number of shares purchased under the repurchase program         1,000,000
Number of shares repurchased 0 0 0 0