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Business Reorganization (Tables)
 6 Months Ended
Jun. 30, 2017
Restructuring and Related Activities [Abstract]  
Schedule of Liability for 2017 employee termination actions
The following table sets forth the change in the liability for the 2017 employee termination actions:
 
 
 
January 1, 2017
$
—

Employee termination benefit costs
3,931

Payments
—

June 30, 2017
$
3,931