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Restructuring Charges (Tables)
 6 Months Ended
Jun. 30, 2016
Restructuring Charges [Abstract]  
Activity in the Restructure Accrual
The following table provides a summary of the activity in the restructure accrual for the six month period ended June 30, 2016:

(in thousands)
December 31, 2015
 
Adjustments
 
Payments
 
June 30, 2016
Facility closure obligation
$
657

 
$
134

 
$
(201
)
 
$
590