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Restructuring (Tables)
 3 Months Ended
Mar. 31, 2018
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Accrual
The following table summarizes the activity of the Company's restructuring accrual during the three months ended March 31, 2018 (in thousands):

 
Employee Severance and Related Benefits
 
Software Charges
 
Excess Facilities, Contract Terminations and Other
 
Total
Balance as of January 1, 2018
$
12,857

 
$
—

 
$
1,386

 
$
14,243

Costs incurred
7,163

 
2,818

 
4,927

 
14,908

Cash disbursements
(10,766
)
 
—

 
(2,986
)
 
(13,752
)
Software and other non-cash charges
—

 
(2,818
)
 
(1,787
)
 
(4,605
)
Balance as of March 31, 2018
$
9,254

 
$
—

 
$
1,540

 
$
10,794