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Fair Value Measurement - Schedule of Fair Value of Contingent Consideration Liability (Parenthetical) (Detail) | 12 Months Ended
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Dec. 31, 2013
Fair Value Disclosures [Abstract] |
Acquisition date | Oct. 01, 2013

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- Definition Date when the business acquisition agreement was executed, in CCYY-MM-DD format. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration