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Subsequent Event - Dividend Declaration - Additional Information (Detail) - $ / shares |  |  | 3 Months Ended
--- | --- | --- | ---
Feb. 19, 2016 | Aug. 15, 2013 | Dec. 31, 2015
Subsequent Event [Line Items] |  |  |
Cash Dividends approved per common share |  | $ 0.25 | $ 0.27
Date of Record |  |  | Mar. 07, 2016
Dividend Payable Date |  |  | Mar. 18, 2016
Subsequent Event | Chief Executive Officer |  |  |
Subsequent Event [Line Items] |  |  |
Minimum annual equity award as percentage of salary | 200.00% |  |

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- Definition Minimum annual equity award stated as percentage of salary. + References No definition available. + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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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 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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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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- Details
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