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Shareholders' Equity - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended
--- | ---
Sep. 30, 2014 | Sep. 30, 2013
Shareholders Equity [Line Items] |  |
Number of Shares repurchased | 0 | 0
Approximate dollar value of shares that may yet be purchased under the plan or program | $ 16.9 | $ 16.9

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- Definition Number of shares that have been repurchased and retired during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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