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Restructuring (Detail)
$ in Thousands
6 Months Ended
Jun. 30, 2016
USD ($)
Restructuring Cost and Reserve [Line Items]  
Ending accrued balance as of December 31, 2015 $ 0
Charges incurred during the period 1,343
Payments during the period (356)
Ending accrued balance as of June 30, 2016 $ 987