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RESTRUCTURING (Tables)
 6 Months Ended
Jun. 30, 2018
Restructuring And Related Activities [Abstract]  
Summary of Restructuring Reserve

The following table summarizes the restructuring reserve for the periods indicated:

 

 

 

As of

June 30,

2018

 

 

As of

December 31,

2017

 

 

 

(in thousands)

 

Restructuring reserve beginning balance

 

$

2,933

 

 

$

1,588

 

Restructuring expenses incurred during the period

 

 

—

 

 

 

3,020

 

Amounts paid during the period

 

 

(711

)

 

 

(1,675

)

Reversal of cease-use liability

 

 

(2,222

)

 

 

—

 

Restructuring reserve ending balance

 

$

—

 

 

$

2,933