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

 
$
—

 
$
(410
)
 
$
—

 
$
45

 
 
$
4,130

Facility Exit Related Costs
588

 
827

 
(355
)
 
—

 
1,060

 
 
1,693

 
 
 
 
 
 
 
 
 
 
 
 
 
2017 Initiatives
 
 
 
 
 
 
 
 
 
 
 
 
Employee Severance Costs
—

 
2,946

 
(2,574
)
 
—

 
372

 
 
2,946

Facility Exit Related Costs
—

 
1,270

 
(108
)
 
91

 
1,253

 
 
1,270

Other Related Costs
—

 
655

 
(296
)
 
(169
)
 
190

 
 
655

Total
$
1,043

 
$
5,698

 
$
(3,743
)
 
$
(78
)
 
$
2,920

 
 
$
10,694