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Restructuring Charges (Tables)
 12 Months Ended
Dec. 31, 2017
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Reserve
The following table reflects the movement of activity of the restructuring reserve for the year ended December 31, 2017:


One-time Termination Benefits
Accrual balance as of December 31, 2016
$
2,754

Restructuring charges
1,477

Utilization
(3,223
)
Accrual balance as of December 31, 2017
$
1,008