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Restructuring Liabilities (Tables)
 9 Months Ended
Sep. 30, 2017
Restructuring And Related Activities [Abstract]  
Summary of Changes in Restructuring Liabilities

The following table summarizes the changes in the restructuring liabilities for the 39-weeks ended September 30, 2017 (in thousands):

 

 

 

Severance and

Related Costs

 

 

Facility

Closing Costs

 

 

Total

 

Balance at December 31, 2016

 

$

22,596

 

 

$

865

 

 

$

23,461

 

Current period charges

 

 

5,937

 

 

 

—

 

 

 

5,937

 

Change in estimate

 

 

(2,402

)

 

 

(256

)

 

 

(2,658

)

Payments and usage—net of accretion

 

 

(16,870

)

 

 

(109

)

 

 

(16,979

)

Balance at September 30, 2017

 

$

9,261

 

 

$

500

 

 

$

9,761