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Quarterly Financial Data (Unaudited) - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract] |  |
Proceeds from Legal settlement | $ 1.9 |
Reduction in fair value of contingent purchase price liability |  | $ 0.7

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- Definition Business acquisition preacquisition contingency reduction in fair value amount. + References No definition available. + Details
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- Definition Cash received for the settlement of litigation during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Details
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