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Restructuring (Tables)
 6 Months Ended
Jun. 30, 2018
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring and Related Costs
The following table sets forth a summary of restructuring activities related to the Company's 2016 restructuring program in 2018 (in thousands):
    
December 31, 2017
 
Costs Incurred
 
Cash Payments
 
June 30, 2018
Termination benefits
$
185

 
$
—

 
$
—

 
$
185