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Restructuring (Tables)
 9 Months Ended
Sep. 30, 2017
Restructuring and Related Activities [Abstract]  
Restructuring Activity
The following table sets forth details regarding the activities described above during the nine months ended September 30, 2017:

 
Balance as of January 1, 2017
 
Expenses,
Net
 
Cash
 
Noncash
 
Balance as of September 30, 2017
 
(in thousands)
Employee severance and other personnel benefits:
$
—

 
$
5.9

 
$
(5.1
)
 
$
(0.1
)
 
$
0.7