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Subsequent Event - Additional Information (Detail) (USD $) | 9 Months Ended | 0 Months Ended |
--- | --- | --- | ---
Sep. 30, 2014 | Nov. 12, 2014 Subsequent Event [Member] | Nov. 12, 2014 Subsequent Event [Member]
Subsequent Event [Line Items] |  |  |
Dividend declared amount |  |  | $ 0.025
Dividend declared date | Nov. 12, 2014 |  |
Dividend record date |  | Dec. 05, 2014 |
Dividend payable date |  | Dec. 19, 2014 |

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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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Period Type: | instant

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- Definition Date the dividend to be paid was declared, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. + References No definition available. + Details
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- Details
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