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Commitments and Other Contingencies (Tables)
12 Months Ended
Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]  
Restructuring and related costs
The following table summarizes activity related to liabilities associated with our restructuring activities in 2016:
 
Employee-Related Costs
 
Retention Bonuses
 
Total
 
(In thousands)
Balance at year-end 2015
$
(1,049
)
 
$

 
$
(1,049
)
Additions
(2,072
)
 
(832
)
 
(2,904
)
Payments
3,121

 
832

 
3,953

Balance at year-end 2016
$

 
$

 
$