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Consideration Transferred (Detail) - USD ($)
$ in Thousands
9 Months Ended
Jun. 02, 2014
Sep. 30, 2014
Business Acquisition [Line Items]    
Cash consideration, $ 21,170 $ 21,236
Value of common stock issued 4,000  
Estimated fair value of contingent consideration 1,370  
Total consideration transferred $ 26,540