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Accrued Liabilities (Tables)
 9 Months Ended
Sep. 30, 2017
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities
The following table presents the detail of accrued liabilities as of the dates presented:
 
December 31,
 
September 30,
 
2016
 
2017
Accrued compensation and benefits
$
16,659

 
$
22,380

Legal fees and settlements
2,795

 
2,205

Miscellaneous accrued liabilities
2,799

 
5,617

Total accrued liabilities:
$
22,253

 
$
30,202