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Restructuring (Tables)
 6 Months Ended
Jun. 30, 2017
Restructuring and Related Activities [Abstract]  
Summary of Restructuring Liability
The following table sets forth activity in the restructuring liability for the six months ended June 30, 2017 (in thousands):
 
Balance at December 31, 2016
 
Costs Incurred
 
Payments
 
Balance at June 30, 2017
 
 
Cumulative Costs Incurred to Date
2015 Initiatives
 
 
 
 
 
 
 
 
 
 
Employee Severance Costs
$
455

 
$
—

 
$
(277
)
 
$
178

 
 
$
4,130

Facility Exit Related Costs
588

 
431

 
(227
)
 
792

 
 
1,297

 
 
 
 
 
 
 
 
 
 
 
2017 Initiatives
 
 
 
 
 
 
 
 
 
 
Employee Severance Costs
—

 
1,652

 
(1,085
)
 
567

 
 
1,652

Other Related Costs
—

 
169

 
—

 
169

 
 
169

Total
$
1,043

 
$
2,252

 
$
(1,589
)
 
$
1,706

 
 
$
7,248