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Restructuring Charges (Tables)
3 Months Ended
Mar. 31, 2018
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Charges
The following table summarizes the total cash and non-cash restructuring charges recognized during the three months ended March 31, 2018 (in thousands): 

Employee termination costs
$
1,605

Non-cash employee termination costs - stock-based compensation
251

Total restructuring charges
$
1,856

Schedule of Restructuring Reserve
The following table summarizes the accrued restructuring charges activity during the three months ended March 31, 2018 (in thousands):

 
Three Months Ended March 31, 2018
 
Beginning balance
 
Charges
 
Payments
 
Ending balance
Employee termination costs
$

 
$
1,605

 
$
(552
)
 
$
1,053

Accrued restructuring charges - current
$

 
$
1,605

 
$
(552
)
 
$
1,053