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Subsequent Events - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified | 1 Months Ended | 0 Months Ended
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Oct. 31, 2011 | Oct. 28, 2013 Subsequent Event [Member] | Oct. 28, 2013 Subsequent Event [Member] Minimum [Member] | Oct. 28, 2013 Subsequent Event [Member] Maximum [Member] | Oct. 28, 2013 Subsequent Event [Member] Dividend Declared [Member]
Subsequent Event [Line Items] |  |  |  |  |
Quarterly cash dividend per share |  |  |  |  | $ 0.08
Date of payment to shareholders entitled to dividends |  |  |  |  | Dec. 27, 2013
Date of record of shareholders entitled to dividends |  |  |  |  | Dec. 13, 2013
Share repurchase program, new limit amount | $ 25.0 |  | $ 24.4 | $ 25.0 |
Share repurchase program, current authorization date |  | Dec. 31, 2013 |  |  |
Share repurchase program, extended authorization date |  | Dec. 31, 2014 |  |  |

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- Definition Revised Expiration Date Of Share Repurchase Program + References No definition available. + Details
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- Definition Share Repurchase Program Date + References No definition available. + 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 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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- 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 Amount of a stock repurchase plan authorized by an entity's Board of Directors. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Details
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