Quarterly report pursuant to Section 13 or 15(d)

Fair Value Remeasurement Based on Significant Inputs Not Observable, Level 3 Measurement (Detail)

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Fair Value Remeasurement Based on Significant Inputs Not Observable, Level 3 Measurement (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Fair value, beginning balance $ 960
Fair value of contingent consideration issued during the period 7,775
Change in fair value (120)
Fair value, ending balance $ 8,615