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

Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

No definition available.

Name:	us-gaap_BusinessAcquisitionDateOfAcquisitionAgreement1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration