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Earnings Per Share - Additional Information (Detail)
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3 Months Ended | 9 Months Ended | ||
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 31, 2014
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Mar. 31, 2013
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| Earnings Per Share Disclosure [Line Items] | ||||
| Number of potentially dilutive stock option shares excluded from the calculation of earnings per share | 55,000 | 222,000 | 115,000 | 222,000 |